47 Game Of Thrones Actors Who Have Appeared In Doctor Who

As Season Five of Game of Thrones comes to an end this weekend, and Doctor Who fans wait impatiently for the Time Lord's return in the Autumn, there's an awful lot of cross-over between the two shows to date. Then again, there's also a lot of cross-over with now-defunct British cop show The Bill, but that's another story, and not nearly as cool, so we'll concentrate on two of the biggest shows on the planet, eh?

SPOILER WARNING

The following article contains spoilers for Game of Thrones seasons 1-5, and various episodes of Doctor Who. You have been forewarned!

BBC / HBO

When Doctor Who returns for its ninth series - or its thirty-fifth if you're that way inclined - this Autumn, at least two familiar faces for Game of Thrones fans will be in the mix.

Ayra Stark herself - Maisie Williams - will be appearing in a two-part story in the middle of the run.

Before her, the legendary Paul Kaye, best known to Thrones fans as Thoros of Myr, will also be making an appearance.

But they're not the first actors to cross over the two titans of genre tv. Far from it. In fact, watching Game of Thrones, with its legion of characters with funny names, can be a little daunting at first, and a little affinity for the longest running sci-fi show in the world certainly helps when it comes to remembering who is who until you inevitably know George RR Martin's world like the back of your hand.

In chronological Thrones order, then...

Iain Glenn [Jorah Mormont / Father Octavian]

HBO / BBC

Dany's (not-so) trusted advisor has been through the wringer this season. Banished by his beloved Khaleesi, his attempts at winning her favour once more by capturing Tyrion Lannister for her amusement saw him cast out once more, and get a touch of Greyscale which may yet ingulf him.

Yet actor Iain Glenn, who first appeared in series opener Winter is Coming, should have been more careful when encountering stone-men, considering he was once offed by the dreaded Weeping Angels in the latter half of two-part Matt Smith era Doctor Who story The Time of Angels / Flesh and Stone. He didn't blink, and they didn't kill him nicely, either...

Donald Sumpter [Maester Luwin / Erasmus Darkening / Commander Ridgeway / Enrico Casali]

A legend of British television, Donald Sumpter breathed life into Winterfell's beloved Maester during the first two seasons of Thrones, meeting a horrible demise during Theon Greyjoy's occupation of the castle.

It was a far cry from Sumpter's recent villanous work, which included playing the big-bad in Series Two of Being Human, and a role as ancient wizard Erasmus Darkening in The Sarah Jane Adventures story The Eternity Trap.

This wasn't Sumpter's first brush with the Whoniverse, however. He played Commander Ridgeway, captured by The Sea Devils back in 1972, and four years earlier, made his Who debut in The Wheel in Space as Enrico Casali.

Ron Donachie [Rodrik Cassel / Steward]

HBO / BBC

Luwin isn't the only familiar member of the Stark staff within the walls of Winterfell.

First up, Ned's faithful right-hand man Rodrik Cassel, who also met an untimely end thanks to Theon Greyjoy's treachery during the second season, is played by Ron Donachie: who previously cropped up in Doctor Who as one the Steward in Tennant era favourite Tooth and Claw.

Jamie Sives [Jory Cassell / Captain Reynolds]

HBO / BBC

Tooth and Claw also featured two other Game of Thrones actors, one of which we'll come to in due course, but whilst we're on the subject of the Stark household, let's take a moment to remember the brilliant Jory Cassell: Captain of the Guards for poor ol' Ned, who stayed by his side in King's Landing until a well-placed dagger to the eye ended his days.

Previously, as Captain Reynolds in Doctor Who actor Jamie Sives met another nasty demise alongside Ron Danachie, blocking the path of a vicious werewolf intent on infecting Queen Victoria with the lycanthrope gene. This was all down to that other former Game of Thrones star, but we'll come back to him later...

Susan Brown [Septa Mordane / Bridget Spears]

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Another Stark employee with Whoniverse credentials is actress Susan Brown, who, as Septa Mordane, was tutor to Sansa and Ayra at Winterfell and later King's Landing, where she met her off-screen demise at the hands of Lannister guards towards the climax of the first season.

A few years previously, Brown turned up in Torchwood's five-part third series, Children of Earth, as Bridget Spears. Faithful PA to Home Secretary John Frobisher (future Time Lord, Peter Capaldi), Spears was also instrumental in the downfall of the corrupt Prime Minister Brian Green.

Harry Lloyd [Viserys Targaryen / Baines]

HBO / BBC

Across the narrow sea is another familiar face, in the form of Harry Lloyd: real life great-great-great-grandson to Charles Dickens, and Supreme Tweeter extraordinare.

Long before he was spoilt brat and wannabe king Viserys Targaryen - a man never more befitting of a golden crown, no less - he was posh-toff public school boy Baines in two part Doctor Who story, Human Nature / The Family of Blood. Baines met a nasty end fairly early on in the story, but his body then housed the wicked Son of Mine from the titular family, later forced to be a scarecrow in the middle of a field for the rest of time. The golden crown was a much better way to go...

Julian Glover [Grand Maester Pycelle / Count Scarlioni / Richard the Lionheart]

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In the episode Lord Snow we meet Grand Maester Pycelle, the treacherous, lecherous medicine man of King's Landing - a rather odious creature who somehow manages to keep on living when all around him have a habit of dropping like flies.

Which, I suppose, is no surprise when you consider he is played by the legendary Julian Glover: a man with an impressive CV behind him that includes roles in The Empire Strikes Back, Indiana Jones and the Last Crusade, For Your Eyes Only and, er... King Ralph to name but a few.

Glover's career also stretches to two very different appearances in Doctor Who. In 1979's legendary City of Death (written by Douglas Adams), he plays the villainous Count Scarlioni, who is actually a Scaroth split across mankind's history. You can even buy an action figure of his character, with inter-changeable heads: that's how much this story is beloved by Whovians old and new.

Many years before that, he appeared alongside William Hartnell in 1965's historical story The Crusade as the noble Richard the Lionheart. In both appearances, as with just about everything he touches, Glover is magnificent.

Owen Teale [Alliser Thorne / Ewan Sherman / Maldak]

Another grimy individual introduced in Lord Snow is Alliser Thorne, the brother of the Night's Watch who has been a thorn in Jon Snow's side ever since.

Played by renowned Welsh actor Owen Teale, it's perhaps only natural that he's had a brush with the Whoniverse since Cardiff became the home for all things Who in 2005. Back in the very first series of spin-off show Torchwood, Teale played cannibalistic Ewan Sherman in the rather effective horror-episode Countrycide, whose chilling explanation for his dietary decisions was simply: "Cause it made me happy". Still creepy.

This wasn't Teale's first or last brush with Doctor Who however. As well as appearing in Big Finish audio productions, one of his earliest television appearances was as Maldak, in 1985's superb Vengeance on Varos. Seemingly another nasty piece of work at first, he had a last minute change of heart and saved the Governor and Peri from a nasty death. So he can be nice on screen sometimes...

Margaret John [Old Nan / Grandma Connolly / Megan Jones]

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Ah, Margaret John - beloved by fans of Gavin and Stacey as randy old Doris, and by a whole other generation as Marian in Crossroads, her two short appearances in Game of Thrones as Old Nan, sitting in with the bedridden Bran Stark, marked the final appearances of this veteran actress, who passed away two months before the first episode aired.

In her long and varied career, John made two appearances in Doctor Who. In 2006, she played Grandma Connolly in Tennant era episode The Idiot's Lantern, having her face sucked off through the television by The Wire, and then restored when The Doctor defeated the bizarre alien creature at the climax of the story. The face-sucking occurred off-screen in the episode, but was captured in the accompanying Tardisode, a short-lived series of one-minute minisodes available online in the run-up to transmission. There was even an action figure made of Grandma Connolly with two head choices, which proved all the more popular due to her appearance the previous year as the demonic Nanatoo in The Mighty Boosh: Satan's evil in a nylon gown, indeed.

Almost four decades earlier, John had also appeared in four episodes of Patrick Troughton's seminal 1968 story Fury from the Deep, as Megan Jones: CEO of Euro Sea Gas, which was being used as the base for an alien invasion. Sadly, this story remains almost completely missing from the BBC archives, and can only be enjoyed via telesnaps and the audio soundtrack... for now, at least.

Joe Dempsie [Gendry / Cline]

HBO / BBC

Skip forward a couple of episodes to The Wolf and the Lion, and we're introduced to Robert Baratheon's bastard son Gendry, who becomes an integral part of the plot for the next two and a half seasons, before he sets off rowing and... well, he's still rowing, okay?

Previously better known for his role in Skins, a much weedier looking Dempsie also cropped up in Tennant-era episode The Doctor's Daughter as Cline: a young soldier on the planet Hath, who is actually a progenerated machine-made 'human' with a lifespan of only a day or so. Because that makes lots of sense, naturally.

Finn Jones [Loras Tyrell / Santiago Jones]

HBO / BBC

In A Golden Crown, we're introduced to curly haired knight Loras Tyrell, who tries his hardest to remain in the closet even when all of Westeros seems to be aware of his affair with his sister's husband, Renly. In recent years, he's been lined up to married Cersei Lannister, then thrown in jail by the High Sparrow for his sexual activities, so things are not looking good for poor Loras right now.

Flash back to the year before Game of Thrones began, and Jones played the grandson of legendary classic-Who companion Jo Grant in The Sarah Jane Adventures story The Death of the Doctor, alongside Elisabeth Sladen, Katy Manning and Matt Smith. Manning left the series in 1973, with her character getting engaged to hippy scientist Clifford Jones: Finn played one of her many grandkids, Santiago, who accompanied Jo on her travels around the world, and helped defeat the evil Shansheeth - but more on those later...

Mark Lewis Jones [Shagga / John Ellis]

HBO / BBC

Here's an interesting one that no doubt looks rather impressive in this actor's show-reel. Do you remember Shagga? The leader of the Stonecrows who had an affinity for axes, and spared Tyrion's life to form a brief alliance with the Lannisters, then never be seen or heard from again?

Well, Shagga was played by actor Mark Lewis Jones, who also turned up in the first season of Torchwood as John Ellis in the episode Out of Time. Ellis was a passenger on twin-engine aircraft Sky Gypsy in 1953, which got caught in the Cardiff rift and spewed out in 2006. Scared by the new world he finds himself in, with seemingly no way of returning to 1953, he asks Jack Harkness to help him end his life in a touching sequence that showed there was more to Torchwood that naughty words, mindless violence and, ironically enough, lots of shagging. So much shagging...

Ian Gelder [Kevan Lannister / Mr Dekker]

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Shagga's love of axes is much to the chagrin of a character we meet in Baelor, the ninth episode of Season One: Kevan Lannister. Initially a minor recurring character, Kevan has recently landed himself in charge of King's Landing - acting as Hand of the King whilst Tommen mopes in his room due to the imprisonment of his wife and mother at the hands of the Sparrows.

Played by acclaimed actor Ian Gelder, whose involvement gives me a second chance to mention King Ralph in this article, Kevan is the latest in a long line of roles in prestigious productions that has included Rumpole of the Bailey, Brass Eye, State of Emergency and, of course Torchwood as MI5 expert Dekker in Children of Earth.

David Bradley [ Walder Frey / William Hartnell / The Doctor / Solomon / Shansheet Blue]

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Baelor also introduced us to the truly vile Walder Frey, played with no reservations by veteran character actor David Bradley. Frey's appearances in the series have been minimal, with just three episodes under his belt to date, but given he was instrumental in the game-changing Red Wedding, his legacy looms large over the series all the same.

Bradley, of course, is known to millions around the world as Argus Filch in the Harry Potter movies, and has a hugely respected career behind him including roles in Broadchurch, Our Friends in the North, Hot Fuzz and The World's End as well as a long line of highly acclaimed stage credits to his name.

In recent years, Bradley has become a part of the Whoniverse three times. Initially appearing off-screen as the voice of Sansheeth Blue in The Sarah Jane Adventures story Death of the Doctor (which also featured Finn Jones), he got to battle Matt Smith's Doctor once more as the wicked Solomon in 2012's Dinosaurs on a Spaceship.

However, his biggest contribution to Doctor Who was as playing William Hartnell (and by default, The Doctor) in sublime biopic An Adventure in Space and Time, made as part of the show's 50th anniversary celebrations, and written by fellow Game of Thrones star Mark Gatiss.

Liam Cunningham [Davos Seaworth / Captain Zhukov]

HBO / BBC

Throughout the first season of Game of Thrones, every actor who crossed over cast lists with the Whoniverse did so before ending up in Westeros.

That all changed with The North Remembers: the opening episode of Season Two, with three out of four newcomers with connections to Doctor Who appearing in the Time Lord's adventures after their first time on ...Thrones.

The biggest name of the three was highly acclaimed actor Liam Cunningham, who was cast as Davos Seaworth: Stannis Baratheon's right-hand man with a fair chunk of that right hand missing. Davos has stayed by Stannis' side through thick and thin, losing his son at the Battle of Blackwater, being imprisoned for disagreeing with the methods of bonkers Red Witch Melisandre, and most recently unknowingly losing his young friend, Shireen.

In the middle of all this, Cunningham made his long awaited Doctor Who debut as Captain Zhukov in Matt Smith era episode Cold War, which is another tale written by Mark Gatiss (we'll come back to him later). Zhukov commands a Russian submarine which is infiltrated by a lone Ice Warrior.

Of course, in a parallel universe, Cunningham won the part of The Doctor himself, which he'd auditioned for in 1996, and no doubt has a string of amazing audio adventures and a brief but triumphant return to television for the 50th anniversary under his belt.

Ben Crompton [Eddison Tollett / Ross]

HBO / BBC

The North Remembers also introduced Ben Crompton as Eddison Tollett, brother of the Nights Watch and one of the few men loyal to Jon Snow through thick and thin, even if that loyalty has been severely tested by Snow's recent attempts at saving the Wildlings from destruction.

In the UK, Crompton is perhaps best known for his role as Colin in BBC Three sitcom Ideal, two seasons of which were directed by Ben Wheatley shortly before he became the toast of the British film industry thanks to Kill List, Sightseers and A Field in England. In 2014, Wheatley directed the first two episodes of Peter Capaldi's debut run as the Doctor, and cast Crompton in the role of Ross - the hapless soldier who meets his demise when he joins the Doctor and Clara on a trip Into the Dalek.

Tony Way [Ser Dontos Hollard / Alf]

HBO / BBC

Ben Wheatley is also responsible for bringing our next Game of Thrones actor into the Doctor Who fold.

Comedy legend Tony Way has appeared in some of the finest sketch shows and sitcoms of the last twenty years, from Bang, Bang, It's Reeves and Mortimer, The Fast Show and Spaced, through to Mongrels, Brian Pern: A Life in Rock and House of Fools. He's also been branching out in recent years, with a sizable role in Tom Cruise action flick Edge of Tomorrow and a part in Shakespearean thriller Anonymous under his belt.

To Game of Thrones fans, however, he'll always be drunken knight Ser Dontos Hollard: almost choked to death by Joffrey's goons in The North Remembers, then caught up in the plot to kill the brutish king by Littlefinger, and murdered for his trouble in Breaker of Chains. Death happens to Tony Way on screen a lot - with director Ben Wheatley also offing him in Down Terrace, Sightseers and most recently, Doctor Who. His brief role in Deep Breath saw him question the nature of a T.Rex in the Thames, before his eyes were removed from his face by a Clockwork Droid. Nasty.

Robert Pugh [Craster / Tony Mack / Jonah Bevan]

HBO / BBC

Rarely has a character in Game of Thrones been as utterly vile as Craster, and that's saying something. King of his own hut, Craster lived beyond the wall with his many wives, some of whom were his own daughters, and sacrificed any sons he had to the White Walkers. His death at the hands of Karl Tanner (another one we'll come back to) was perhaps the only good deed Tanner ever committed.

Back in the Whoniverse, actor Robert Pugh's two roles to date have been polar opposites to the vile Craster. In the two-part Silurian story The Hungry Earth / Cold Blood, Pugh was caring grandfather Tony Mack, who was attacked by a defensive Silurian and ended up staying underground with the ancient race and the love of his life, Dr Nasreen Chaudhry.

Two years previously, Pugh also turned up in Torchwood episode Adrift, as lost teenager Jonah, who turns up seven months after his disappearance visibly aged and heavily scarred after being stuck on a burning planet and looking into the heart of a Dark Star, before the rift threw him back.

Lucian Msamati [Salladhor Saan / Guido]

HBO / BBC

An old friend of Ser Davos, Salladhor Saan has popped up three times since his debut in The Night Lands: the second episode of Season Two. The charming pirate may have a wife at home, but that doesn't stop him taking long baths with beautiful ladies, but then this is Westeros, after all.

Prior to Game of Thrones, actor Lucian Msamati appeared alongside Matt Smith, Karen Gillan and Arthur Darvil in Doctor Who story The Vampires of Venice. His character, Guido, had sent his daughter to an exclusive private school, which just happened to be a front for giant alien fish masquerading as vampires. Because this is Doctor Who, where that kind of thing is almost normal.

Sam Callis [Gold Cloak / Security Guard]

HBO / BBC

Here's a slightly less obvious one. The Gold Cloak in The Night Lands who threatens Yoren on the Kingsroad, and almost gets a sliced artery for his trouble is played by Sam Callis, best known for his three year stint as PC Callum Stone in The Bill.

Callis also made a brief appearance in Doctor Who back in 2005, as a Security Guard on the Gamestation, temporarily incarcerating The Doctor, Jack Harkness and Lynda Moss following the apparent death of Rose Tyler at the hands of the Anne Droid. Ah, so long ago...

Ian Hanmore [Pyat Pree / Father Angelo]

HBO / BBC

Look, it's a fair bet to assume that Ian Hanmore, whose career has taken in roles in Life on Mars, Two Thousand Acres of Sky, Shameless and highly acclaimed film The Magdelene Sisters is a nice guy. But in Game of Thrones, it was remarkably easy to cheer when his creepy ass was burnt to a crisp by Dany's dragons at the climax of Season Two.

Long before Pyat Pree was freaking us out with his multi-bodied magic tricks, he was behind a plot to take over the crown by making Queen Victoria a werewolf in Doctor Who episode Tooth and Claw: an episode which, as we've already covered, featured fellow Game of Thrones stars Ron Donachie and Jamie Sives. His fatal mistake was to be left alone with ol' Vic, who was most certainly not amused. Until she shot him, at which point, the audience certainly was.

David Fynn [Rennick / Marcellus]

HBO / BBC

One of the joys of Game of Thrones is that seemingly anyone, at any time, can be the next character to die. Nobody is truly safe, from the very top of the cast list, right down to the random extras this week. And whilst some characters get whole seasons to make their mark, others get one scene, such as David Fynn's Rennick in Garden of Bones.

A hapless Lannister soldier on sentry duty one night, he has a debate about the greatest swordsman in the Sven Kingdoms with a guardsman, farts loudly, goes for a piss, and is prompty ripped to shreds by a direwolf. And so ends the life of Rennick. We hardly knew ya.

Fynn - who has since gone on to play Brett in hit US sitcom Undatables, and make an appearance in Sherlock as a nerdy tube driver, also turned up in 2010 Doctor Who episode The Pandorica Opens, as Roman soldier and unknowing Auton Marcellus. The lipstick in the image above was, naturally, courtesy of River Song.

David Verry [High Septon / Joseph Green]

HBO / BBC

Our first High Septon on this list is also our first Slitheen, and we'll return to both later on. In The Old Gods and the New, as Myrcella is shipped off to Dorne to return as a completely different actress in a few years time, she is blessed by the High Septon of King's Landing, played by David Verrey. Within minutes, a revolt by the hungry townsfolk saw him dismembered by an angry mob, who read the papers every day. Maybe.

Verrey of course, will be instantly recognisable to Doctor Who fans as MP Joseph Green: a portly fellow who was skinned to become a disguise for the gaseous Slitheen family from Raxacoricofallapatorious in Christopher Eccleston's two-parter Aliens of London / World War Three, prompting the now immortal line: "'Scuse me, d'ya mind not farting while I'm saving the world?"

Ross Mullan [White Walker / The Teller / Silent / Ice Warrior]

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The full-on arrival of the White Walkers at the climax of Season Two was a huge moment for Game of Thrones, and at the time, seemingly heading them up was Ross Mullan. His main White Walker character went on to meet his end thanks to a quick thinking Samwell Tarly, but Mullan continues to appear as other White Walkers in the show to date.

Canadian born Mullan has made a bit of a name for himself as a monster man, after appearance as an Ice Warrior at the Doctor Who Proms led to appearances as a Silent in The Time of the Doctor and The Teller in Time Heist. Time will tell if he returns to the series in the future, but right now, not even all these monster jobs put together are as cool as his other big claim to fame: as the puppeteer and voice of CBBC's Nev the Bear. No, really.

Dame Diana Rigg [Olenna Tyrell / Mrs Gillyflower]

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The almighty Dame has had a long and varied career, but it will perhaps be her two era-defining roles in 1960s spy classics that will be her epitaph. As Emma Peel in The Avengers, her playful flirting with Patrick MacNee's Steed as the pair solved impossibly madcap crimes made her a household name on both sides of the Atlantic. Later, she became the only woman to ever tame James Bond, as his short lived wife Tracy in On Her Majesty's Secret Service.

To Game of Thrones fans, however, she's scheming Olenna Tyrell, the real head of a powerful household whom the Lannisters cross at their peril. She's already arranged for the demise of wicked Joffrey, though with her two children languishing in the Sparrow dungeons, and her hapless husband on a diplomatic mission (to get him nicely out of the way), Olenna's days in power may well be coming to an end.

Just prior to starting her work on ...Thrones, which began in the show's third season, she finally made her Doctor Who debut as the evil Mrs Gillyflower in The Crimson Horror. After painting The Doctor red, her plans to spread poison across the world so she could start a new super-race with her symbiotic leech, Mr Sweet, are thwarted by the combined efforts of the Doc, Clara, Vastra, Jenny, Strax and Gillyflower's own daughter, Ada - played by Dame Rigg's real life daughter, Rachel Stirling.

Thomas Brodie Sangster [Jojen Reed / Tim Latimer]

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Every now and then in Doctor Who, there comes a time when one Game of Thrones regular meets another, which can make revisiting the episodes a little strange in retrospect.

So it was for short-lived mystic child oracle Jojen Reed, who taught Bran Stark how to harness his warg abilities, before being stabbed to death by one of the undead at the climax of Season Four.

Jump back several years, and actor Thomas Brodie Sangster was still plain old Thomas Sangster: a child actor best known for his role in Love, Actually, when he took on the vital role of Tim Latimer in the Doctor Who two-parter Human Nature / The Family of Blood. Here, he was pushed about by a toffee-nosed Harry Lloyd (Viserys Targaryen), and later helped The Doctor and his friends defeat the Lloyd's now transformed Son of Mine and the rest of the twisted Family.

Tobias Menzies [Edmure Tully / Lieutenant Stepashin]

HBO / BBC

There's another one of those weird hybrid moments in 2013's Doctor Who episode Cold War, which was written by Thrones guest-star Mark Gatiss, and as we've already discussed, featured Davos Seaworth himself, Liam Cunningham.

Also along for the ride was Tobias Menzies, best known for his brief role as Edmure Tully, from Walk of Punishment to The Rains of Castermere, who is presumably still rotting away in Walder Frey's jail following the dreaded Red Wedding.

Menzies was second in command Lieutenant Stepashin to Cunningham's submarine captain Zhukov, and it was his foolish attempts at self-defence that prompted the captured Ice Warrior to go on a bit of a killing-spree.

Burn Gorman [Karl Tanner / Owen Harper]

HBO / BBC

Despite all the Game of Thrones cast making guest appearances in the Whoniverse, only one series regular from Cardiff's biggest boost to tourism has crossed over into Westeros to date.

Remember we were talking about the vile Craster earlier on? The man who killed him was Nightswatch Brother turned treacherous deserter Karl Tanner, who then sat on his arse getting drunk until Jon Snow came to sort him out the following season.

He was played by Burn Gorman, who audiences may have recognised either from his appearance in The Dark Knight, or his 26-episode stint as Owen Harper in Torchwood: a man even death couldn't stop. Until he died again, that is.

Kerry Ingram [Shireen Baratheon / The Queen of Years]

HBO / BBC

Oh, poor, poor, Shireen. If there was one moment in Season Five of Game of Thrones audiences really wished they could have stopped happening, it was her shocking death in a bid to give her increasingly mental father a stronger magical chance of sitting on the Iron Throne. First introduced in Season Three episode Kissed by Fire, Shireen taught Davos to read, and gave Stannis some much needed heart... well, until her torched her, that is.

Young Kerry Ingram has also got Doctor Who connections, already: in 2013, she sang at the Royal Albert Hall as part of the Doctor Who Prom, stepping in as the Queen of Years from The Rings of Akhaten, in place of original actress, Emilia Jones.

Ingram also appeared in Matilda The Musical in the West End alongside Thoros of Myr himself, Paul Kaye, who as we mentioned up top is set to appear in ...Who himself this year. It's a small world...

Tim Plester [Black Walder Rivers / Servant]

HBO / BBC

Tim Plester is many things. An actor, writer, producer and director, he first rose to prominence with a triology of short films which put superstars of the 70s and 80s in ordinary situations: Blake's Junction 7 saw the sci-fi show crew stop off at a service station, Ant Muzak let Adam and the Ants go on a late-night shopping trip, and World of Wrestling saw 70s heroes like Giant Haystacks catch the night-bus home. All three co-starred another Game of Thrones star, Mackenzie Crook, before his days in The Office, so do check them out if you can find them.

In ...Thrones, Plester got to administer one of the biggest shocks in the show's history: as one of Walder Frey's sons, he was an active part of the horrible Red Wedding massacre.

His part in Doctor Who, was a bit less memorable: he played one of Kazran's servants in 2010's festive special, A Christmas Carol.

Paul Bentley [High Septon / Professor Candy]

HBO / BBC

Our second High Septon on the list is Paul Bentley, who first appeared in Season Three's Second Sons to replace the last High Septon, dismembered in a peasant's revolt. As well as crowning King Tommen in First of His Name, his most memorable moment came along in Season Five, when he was attacked in Littlefinger's brothel and made to walk naked through the streets by the Sparrows, who whipped his genitals as he went.

Bentley's Doctor Who appearance, by comparison, was rather tame, playing Professor Arthur Candy in Let's Kill Hitler back in 2011. A noted lecturer at the Luna University, he schooled River Song in archaeology before she was once again kidnapped by the Silence. Let us also take a moment to note that Bentley's resume also credits him as playing the Mayor of Slapsbergen in Chuckle Vision. Nice one, Paul!

Mark Killeen [Mero / German Officer]

HBO / BBC

The Doctor once famously said: "I love humans. Always seeing patterns in things that aren't there." One such pattern would be another Let's Kill Hitler guest cast member turning up in Game of Thrones Season Three episode Second Sons, alongside Paul Bentley.

Actor Mark Killeen plays Braavosi swordsman Mero: the Titan's bastard who rather forcefully expects Daenerys to bend to his will. By the end of the episode, his head is on the floor, courtesy of Daario Naharis in his original incarnation, prior to regeneration into a COMPLETELY DIFFERENT PERSON. But no matter.

Eagle-eyed viewers will be aware that Killeen played a German Officer in Let’s Kill Hitler, who was on the receiving end of a recently regenerated River Song and the now legendary line: "Well, I was on my way to this gay Gypsy bar mitzvah for the disabled when I suddenly thought "Gosh, the Third Reich's a bit rubbish. I think I'll kill the Fuehrer." Who's with me?"

Sean Buckley [Old Man / Barman]

HBO / BBC

A blink and you'll miss 'em one now, from The Rains of Castermere. The Old Man that almost gets away from the Wildlings, but is ran down and killed in the rain?

That's actor Sean Buckley, who popped up in The Wedding of River Song as an alien barman, who wouldn't cooperate until The Doctor showed him the eye-stalk of the last Dalek who wouldn't talk.

Indira Varma [Ellaria Sand / Suzie Costello]

HBO / BBC

As we moved into Season Four, we were introduced to some of the inhabitants of Dorne, including sexually charged Ellaria Sand, who went on to swear vengeance for the horrid death of the stupendously awesome Oberyn Martell.

The acclaimed actress behind Ellaria is Indira Varma, who was originally touted as a series regular for initial promotional materials to launch Torchwood in 2006. Only, this was all a ruse, and her character Suzie Costello betrayed the team in the opening episode, Everything Changes, and was promptly shot. Undeterred, she'd already hatched a plan for resurrection, and returned from the grave in They Keep Killing Suzie later in the season. This time around, she stayed dead.

Doctor Who fans might also want to check out BBC crime drama Moses Jones, in which Varma starred alongside Shaun Parkes and a young Matt Smith before he was cast as The Doctor.

Roger Ashton-Griffiths [Mace Tyrell / Quayle / Mr Garrett]

HBO / BBC

Hapless Mace Tyrell's days may be numbered in Westeros. Surely no-one can be that useless and make it through to the final round, can they?

But the world's most bureaucratic house figurehead is played by the brilliant Roger Ashton-Griffiths, who has also made two appearances in the Whoniverse. Back in 2006, he was school teacher Mr Garrett in Torchwood episode Random Shoes, and he popped up once again in 2014's Robert of Sherwood as a wealthy villager who found himself on the receiving end of the Sheriff of Nottingham's blade.

Comedy fans should also recognise Roger from his appearance as red-faced demon simpleton Orgo in The Young Ones, way back in 1982.

Struan Rodger [Three-Eyed Raven / Face of Boe]

HBO / BBC

A little bit of a tricker one to spot here... the voice of the Three-Eyed Raven across Season Four, who eventually turned up at the end of the season with a humanoid body that we'll no doubt be seeing again whenever we return to the adventures of Bran and Hodor, was brought to life by Struan Rodger.

Rodger, who also appeared in Ben Wheatley's phenomenal movie Kill List, voiced the Face of Boe in 2006 Doctor Who episode New Earth and its follow up Gridlock, which technically means he may have played a companion, if rumours about Jack Harkness' eventual death are to be believed.

Jem Wall [Guymon / Michael]

HBO / BBC

Jem Wall's roles in Game of Thrones and Doctor Who could both be described as a spot of acting hokey-cokey. He pops in, he pops out, having shook it all about. Particuarly when he's got Ygritte's arrow in his back as Olly's father Guymon, who later became lunch for Styr in Breaker of Chains.

Wall faired much better in The Lodger, as Craig Owen's call centre boss. When Owen is forced to miss work to recuperate from alien poison, The Doctor fills in, and becomes the best employee ever. So much work done, not enough biscuits munched.

Robert Goodman [Valyrian Slave / Reg]

HBO / BBC

Now, here's an interesting one. Do you remember the old Valyrian Slave in Oathkeeper who challenged Grey Worm's pleas to help Daenerys, but was won over by the deployment of a shit-ton of weapons?

Well, the actor who played him, Robert Goodman, who has appeared in Gangs of New York, Ripper Street and Hustle also cropped up in 2014's Doctor Who episode Listen as West Country Children's Home employee Reg.

Where this get's intriguing is that Goodman apparently had at least four previous uncredited parts in the classic era of the show, during his days as an extra, as detailed in his Who's Round interview last year.

He is believed to have played a Hyperion III Officer in 1986's Terror of the Vervoids, potentially a crew member in the two previous stories (Mindwarp and The Invisible Planet), a Time Lord in 1983's Arc of Infinity, a Citizen in 1980's Full Circle and a Mandrel in 1979's Nightmare of Eden. The images above are merely guesswork at where he MIGHT be seen. Apparently he was also a guard in The Spy Who Loved Me, if there are any keen-eyed Bond fans out there.

Mark Gatiss [Tycho Nestoris / Gantok / Danny Boy / Professor Lazarus / Mark / BBC Bigwig / The Doctor]

HBO / BBC

Known to Game of Thrones fans as Tycho Nestoris: representative of the Bank of Bravos in the fourth and fifth seasons, even the most hardened Westeros-obsessive would be hard pushed to say it is the role he is best known for.

For years, Mark Gatiss' name brought to mind cult comedy classic The League of Gentlemen, which he co-wrote and co-starred in alongside Reece Shearsmith, Steve Pemberton and Jeremy Dyson.

In 2015, however he's best known as the co-creator of the BBC smash hit Sherlock, in which he co-stars with as Mycroft Holmes. The show shares a lot of DNA with Doctor Who, which has been Mark's love for as long as he can remember, but even for a superfan, his numerous credits are incredibly impressive.

On-screen, he's appeared as the de-aging Professor Lazarus in 2007's The Lazarus Experiment and under heavy prosthetics as chess-playing Gantok in 2011's The Wedding of River Song. He also provided the voice of almost unseen pilot Danny Boy in 2010's Victory of the Daleks and 2011's A Good Man Goes To War.

He's also written numerous episodes for the show since it's 21st century return, having cut his teeth writing for Virgin New Adventures, BBC Books and Big Finish audio productions. Since 2005, he's been the scribe of The Unquiet Dead, The Idiot's Lantern (featuring Margaret John), Victory of the Daleks, Night Terrors, The Crimson Horror (featuring Diana Rigg), Robots of Sherwood (featuring Roger Ashton-Griffiths) and the 50th anniversary docu-drama An Adventure in Space and Time (starring David Bradley).

Earlier than that, Gatiss wrote and starred in three sketches for BBC Two's Doctor Who Night in 1999, alongside fellow comic David Walliams. He played a version of himself getting excited over a kidnapped Peter Davison in The Kidnappers, a BBC Bigwig learning about the idea of Doctor Who in The Pitch of Fear, and a tea-loving, overly-friendly Doctor in The Web of Caves. A true legend of Who!

Rupert Vansittart [Yohn Royce / General Asquith]

HBO / BBC

Towards the end of Season Four, we're introduced to Yohn Royce, Lord of Runestone and a powerful bannerman of House Arryn. Following the death of Lysa, he is part of the tribunal investigating her demise, and was last seen trying to train hopeless Robin to fight at the start of Season Five.

Flash back ten years, almost to the day in fact, and actor Rupert Vansittart met a nasty demise as General Asquith in Aliens of London: murdered and used as a skin-suit for a member of the lardy Slitheen family, before being destroyed in the subsequent episode World War Three.

Jonathan Pryce [The High Sparrow / The Master]

HBO / Comic Relief

He's a former Bond villain, and recognisable to millions as Elizabeth Swan's father in the Pirates of the Caribbean movies, and now Jonathan Pryce has added the High Sparrow to his pantheon of classic characters. The only man to stand up to Cersei Lannister and win, he'll have the whole of Westeros under his thumb if he carries on how he's begun.

Which is something his former alter-ego The Master would no doubt approve of. Whilst not an official 'incarnation' of the Time Lord currently looking like Michelle Gomez, Pryce played The Master in Steven Moffat's 1999 Comic Relief spoof The Curse of Fatal Death opposite Rowan Atkinson, augmented with Dalek bumps, and eventually running off with the final incarnation of The Doctor, played by Joanna Lumley. No, really.

Faye Marsay [The Waif / Shona McCullough]

HBO / BBC

Had Jenna Coleman elected to leave Doctor Who last year as originally planned, there's every chance that Faye Marsay would never have been cast in Game of Thrones as the Arya slapping Faceless Men acolyte known only as The Waif.

The reasoning behind this hypothesis is simple: in the 2014 Doctor Who special Last Christmas, her character Shona was set up as a potential companion, helping the Doctor save the day before being dropped off back at home to - I kid you not - carry on with her Thrones marathon. Marsay has expressed a desire to return, so perhaps we've not seen the last of Shona McCullough yet...

Gweneth Keyworth [Clea / Emily Morris]

HBO / BBC

Despite what some parts of the internet would have you believe, not everyone who plays a whore on Game of Thrones is sourced from the pornographic industry. Take, for example, sweet Clea, who wanted to keep Tyrion Lannister company in Season Five episode High Sparrow.

Five years previously, actress Gweneth Keyworth played Victorian ghost-hunter Emily Morris in The Sarah Jane Adventures story Lost in Time, which saw Sarah Jane and her friends split across various points in history. Inspired by her adventure with Miss Smith, the character went on to found a children's hospital and, through her granddaughter, save the world once more.

Ross O'Hennessy [The Lord of Bones / Sgt. Johnson]

HBO / BBC

The Lord of Bones made a memorable impression on Jon Snow in the second and third seasons, and returned briefly in Season Five's Hardhome, played by a different actor, and quickly beaten to death for his attitude.

That actor was Ross O'Hennessy, who was a lot easier to pick out in Torchwood episode Day One: in which he played an uncooperative army officer, Sgt Johnson, investigating a crashed meteorite, and was soon put in his place by Captain Jack Harkness.

Nicholas Boulton [Fighting Pit Announcer / Businessman]

HBO / BBC

Our final crossover to date comes from two brief appearances by actor Nicholas Boulton. In Season Five's The Dance of Dragons, he plays the Fighting Pit Announcer who commences the violence to the joy of the assembled crowd - right before they're all massacred by the Sons of the Harpy.

A long time before that, he popped up in the middle of David Tennant era Doctor Who story Gridlock as a pinstripe-suited businessman, trapped along with millions of others on the clogged up flying superhighways, and potential food for the dreaded Macra.

And that, right now, is that.

As mentioned above, Game of Thrones regular Maisie Williams joins former Thrones guest star Paul Kaye in the forthcoming ninth series of Doctor Who, which airs around the world in the Autumn. No doubt there are plenty more cross-over actors and actresses still to come... though it's a long wait to find out! In the meantime, here's a rather awesome mashup of the two show's legendary theme songs. Hurry up, Beeb, and hurry up, HBO! Winter is coming, and it's about time!

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