No need to worry about your bank balance with this line up of cheap and free stuff to do this week:
Friday: Free open air opera at the Scoop, More London tonight. Take a brolly, blanket and a thermos to help you enjoy Troy Boy by the Merry Opera Company from 6.30pm.
Saturday: Southwark's Urban Physic Garden opens today and it's free to have a look between 11am-5pm plus there's ping pong in a skip.
Participate in or gawp at London's edition of the World Naked Bike Ride, cycling through town starkers from Hyde Park about 3pm.
The Stitch London Stitch Crawl for Worldwide Knit In Public Day starts at midday in the bandstand, St James Park.
Canary Wharf Motorexpo is free to poke about (closes Sunday evening).
There's a free family fun day at Westway Sports Centre between 12-5pm, part of the 40th anniversary celebrations of Westway Development Trust. Try climbing, football, tennis, netball, handball, cricket, table tennis and more.
Watch the Smithfield Nocturne cyclists whiz past from 4pm around Smithfield Market.
It's also Open Garden Squares Weekend.
Sunday: Two Degrees: Cycle Sunday sees Artsadmin (Toynbee Studios) join up with Arcola Green Sundays (Dalston) for a free afternoon of pedal powered arty fun on the route between the two venues. From 2-10pm.
Take a turn about London with the Circle Walk. Open to anyone with an interest and free to join but please let them know you're coming.
Rathayatra is the Festival of Chariots and it runs through Central London from Hyde Park Corner at noon to Trafalgar Square. Inspect the chariots on South Carriage Drive from 11.30am. Follow the chariots and enjoy the free party in the Square till 5pm.
Lee Valley Park Farms open their gates, stables, pens and doors and invite everyone in for free for Open Farm Day between 10am-5pm.
If you're interested in Queen Anne churches, follow the 1711 Walk, London’s first "Pop-Up Baroque Church Crawl: a 15½ mile walking route linking 12 of London’s finest Baroque churches (or, one case, its ruins)."
The beautiful Phoenix Cinema, East Finchley present the final 'Century of Cinema' free screening, stepping back to 2003 with Spirited Away. Don "low rise baggy jeans, hoodies and trucker caps". Film at 2pm (Japanese version with English subtitles).
Monday: Like James Joyce? Really, really like his stuff? Then rock up for the John Coffin Memorial Public Lecture at Beveridge Hall, Senate House, University of London for 6pm to enjoy Professor Michael Wood speak on ' "What room, for worse": Adventures of Disorder in Joyce and After'. Free to attend.
Tuesday: Catch a double bill of comedy for just £5 as Bec Hill wonders what being an adult is all about anyway and Music Box improvise an entire musical for your amusement. At The Miller, Snowsfield Road SE1 from 8pm, £5/3 in.
Wednesday: The Pantaloons present The Canterbury Tales at More London Scoop, free from 6.30pm.
Thursday: There's a free lunchtime talk in the Sainsbury Wing of the National Gallery at 1pm: The Rediscovery of Botticelli and Piero della Francesca
At 7pm, Southwark writer John Constable performs poems and songs from The Southwark Mysteries and launches his book: Secret Bankside – Walks In The Outlaw Borough at Woolfson & Tay Bookshop, 12 Bermondsey Square SE1 3UN £5/£3 conc.
Clapham Picturehouse hosts Cafe Scientifique with Sexy Beasts: the sex lives of animals with an intro by James Robson from the Horniman Museum at 7pm.