1. Visit the Hunterian Museum
"One of the best and most overlooked museums in my opinion is the Hunterian Museum, which is a 5 min walk from Holburn station. It's kinda creepy, but SO interesting. It's full of preserved specimens, medical equipment, skulls/skeletons, abnormalities, that kinda thing."
Suggested by Steff Louise Gros on Facebook
2. Get crafty at Drink Shop & Do
Budget: Tea from £2.80
"Drink Shop & Do at King's Cross have some fab activities including Lego Robots and Lionel Rich-Tea Biscuits - all absolutely free! The only thing you have to fork out for that's less than a fiver is their delicious cocktails and coffees".
Suggested by Maz Norton on Facebook
3. Pick up cheap seats at the National Theatre
Budget: From £5
"£5 standing tickets at the National Theatre. Just don’t pick Hamlet!"
Suggested by Alex Friend on Facebook
4. Stroll around Camden Market
5. Go for a nature walk
"The Pergola and Hill Garden near Hampstead Heath, Kenwood House (not free) and grounds (free) on Hampstead Heath, Richmond Park, walking along the riverbank from Richmond to Teddington, grabbing a cheapish lunch in Broadway Market and walking along the canal back to Angel. Plenty of options."
Suggested by Jo Bromilow on Facebook
6. Buy a snack at Borough Market
"One of my favourite things to do in London, on a Saturday morning, is wander around Borough Market. It can be a little crowded in peak tourist season but the atmosphere is great and if you can resist the temptation to buy all of the Turkish delight, cheese and brownies (something that I've never accomplished) then it's free! That's true of so many great markets in London."
Suggested by Louise Brain on Facebook
7. Or find hidden treasures at Maltby Street Market
"I love Borough market but it is so crowded so I go to Maltby market just round the corner instead now. if you haven't been then it's worth checking it out."
Suggested by Paul Bee on Facebook
13. Feed the ducks in Hyde Park
14. Soak up the sun at Dalston Roof Park
"Dalston Roof Park is a place with great views, and movie screenings, music and art all summer long. It costs just £5 for a membership that is good the entire season. Also, just around the corner is Dalston Eastern Curve Garden. It's a (free!) urban oasis. You can relax with a cup of coffee or tea, attend a workshop or simply stroll the garden."
Suggested by joem45ac45347
15. See what's happening on the South Bank
"Walk along the South Bank, there's always something going on, even if it's skateboarding, same as Covent Garden (although a cup of tea will probably set you back over a fiver!). There's several art trails through the City too and I love paying a visit to the book sellers by Waterloo - they always have some crazy things."
Suggested by becik