Brian Johnson (Tony Gardner)
Before playing the role of Brian, Tony Gardner was a GP. Since leaving the show in 2006 he has been in many TV shows such as, Fresh Meat, The Tracy Ullman Show, and this year he will be in Death in Paradise. He's also pretty active on Twitter.
Sophie Johnson (Carla Mendonça)
Carla Mendonça has recently been in the play Noises Off and is still acting in kids TV shows such as CBBC's So Awkward, Scoop and Dani's House. You can also find her on Twitter.
Melanie Mel Barker (Danielle McCormack)
The last TV show Danielle was in was Doctors in 2012, and she can be found singing on YouTube here.
Josh Barker (Alex Kew)
Since the show Alex has been in About a Boy, The Bill, and 2point4 Children. He is now a singer-songwriter and you can listen to his BBC Introducing session here.
C.J. (Olisa Odele)
Olisa went on to study musical theatre at the Brit School Of Performing Arts and is currently playing Ola in E4's Chewing Gum. He's also an incredible dancer!
Harry (Stephanie Fearon)
Since My Parents Are Aliens, Stephanie has worked consistently in theatre and has had roles in The Wiz, A Chorus Line, RENT and Peter Pan. Her most recent role was playing Lisa in the West End production of Mamma Mia.
Wendy Richardson (Isabella Melling)
Isabella is no longer acting, she did however date Thomas Brodie-Sangster, who is known for his role of Jojen Reed in Game of Thrones, which has recently led to her being in the public eye.
Trent Clements (Keith Warwick)
Keith was 32 when he took on the role of teenager Trent, he has since been in a number of stage and screen roles and is currently playing the guitar in the band The New Piccadillys.