Friday: Witness the ancient esoteric order of The Drummers of Tedworth create a "heady psychodrama" through drumming and their shamanic ritual through candlelight and incense at the Horse Hospital, 7.30pm, free. Take in Adrian Di Duca's exhibition of life sized figurative creatures too (pictured). Part of the new NSEW Festival.
Saturday: Go to Kensal Flea: pick up a bargain, help some charities, enjoy art, comedy, tea and cake. £1 entry to the main bit. £2 donation for the after party 7.30-9.30pm. £3 for the Flea by night. Go and stay all day! At Paradise by Way of Kensal Green from midday.
Sunday: Phoenix Cinema presents a free screening of 1970s German thriller 'The American Friend' with Dennis Hopper at 2pm. Call and book: 020 8444 6789
Monday: The lunchtime lecture from Gresham College explains the essential work that goes on at night to maintain our 150-year-old underground system, but which no commuters ever see. 1pm at Museum of London, free.
The Ideas Factory brings you a night of free, fast and funky comedy on the middle floor at the Old Crown Pub, 33 New Oxford Street from 8pm. Promises are that there will be hats and it will be over by 10.30pm.
Tuesday: It's a welcome return for the Grant Museum of Zoology's free screening evenings with Inherit The Wind introduced by resident film boffin with a film star name, Dr Joe Cain. 6.30pm, free at JZ Young Lecture Theatre, UCL Anatomy Building, Gower Street.
Wednesday: Bone up on your Middle Ages history with a free evening lecture from Gresham College at Museum of London, 6pm.
Tip us off to cheap and free events happening in your 'hood. Entry up to a fiver - all sorts of entertainment welcome. Email firstname.lastname@example.org or leave us a comment.