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GIVE BLOOD: Today’s opportunity to donate blood is at the O2 Centre, Finchley Road. Free, just turn up, see site for times and conditions
COVENT GARDEN PHOTOGRAPHY: London photographer Clive Boursnell has captured and curated a diverse photography exhibition based on the past and present streets of Covent Garden. The exhibition is on display to the public through the Central Avenue of the Market Building in Covent Garden. Free, just turn up, no current end date
EVEREST: Celebrate the 60th anniversary of the first ascent of Everest at Stanfords travel book shop in Covent Garden, with Sir Chris Bonington, Peter Hillary, Jamling Tenzing Norgay, Stephen Venables and Doug Scott for a book signing. Free, just turn up, 10.45am
LITERATURE: At the London Literature Festival, acclaimed short story writer George Saunders talks with Jon McGregor (£8) and Claire Tomalin turns to Thomas Hardy for her next lecture (£10). Prebook, both at 6.30pm
SEXUALITY: Science Museum Lates are excellent and take place on the last Wednesday of every month. Tonight's adult-only programme explores sexuality, so you can discover the history of sex toys, why we fancy the people we do, and how to walk like the opposite sex. Free, just turn up (although you have to prebook to take part in the speed dating), 6.45pm
IRANIAN FILM: The Duke Mitchell Film Club brings you Hollywood Iran Style, an evening of Iranian directors working in Hollywood B-Movies. Tonight’s feature is Samurai Cop, alongside other Iranian-themed short films, a quiz and music. Free, just turn up, 7pm
LITERARY DINNER: Join three prize-winning French Noir authors at Hardy's Brasserie for dinner and discussions about their latest work. £40, prebook, 7pm
COMEDY AND CURRY: Bec Hill, Lenny Sherman, Sami Stone, Diane Spencer and Mike Sheer are at the Gallery Cafe in Bethnal Green for a fiver, or for a tenner you can have a curry before the comedy. £10/£5, just turn up, food from 7pm or gig at 8.30pm
BOOKSWAP: Join Matt Haig and Andrew J Lambie in the Great Northern Tavern for the Big Green Bookshop Bookswap. Free, just turn up, 7.30pm
COMEDY: Actor, comedian and computer-geek Adam Buxton previews new material in Invisible Dot's intimate venue. £8, prebook, 7.45pm
CRAP FILM: Birdemic: Shock and Terror is screening for your viewing (dis)pleasure courtesy of the Crap Film Club tonight, complete with dodgy CGI vultures/eagles/owls/can’t even make out what the other birds are. Free, just turn up, 8pm
NERDINESS: Head to Paper Dress Vintage, 114-116 Curtain Road for an evening of short talks on subjects as diverse as cybercrime and LEGO universes, at Nerd Night London. £6, prebook, 8pm
TONGUE FU: Phill Jupitus (presumably under his Porky the Poet guise), Ross Sutherland, Richard Marsh and Katie Bonna are the guests of Tongue Fu at the Udderbelly. £12.50, prebook, 9.15pm
Random London Fact of the Day
The most northerly point in Greater London is called Tilekiln Osiers, a small rhomboid of low deciduous woodland cut in twain by the M25. Find out more about this buzzing acre of London, and the other cardinal extremes, here.
Good Cause of the Day
National AIDS Trust (NAT) hosts its Spring Awakening 2013 fundraiser tomorrow evening. It will be hosted by Christopher Biggins and Su Pollard, will feature live music from Erasure's lead singer Andy Bell, and offers the opportunity for attendees to win great prizes. Spring Awakening is a vital source of income and awareness-raising for NAT. £75, prebook, Thursday 30 May at 7pm
Recommended Indie Bookshops of the Day
Each day this week, we're recommending one of our favourite local bookshops.
London Weather, by Inclement Atlee
The rain continues. Endless deluge and dilution will leave Londoners feeling like they're living in a homeopathic preparation. Unlike a homeopathic preparation, however, we actually have to work. Off to the office with you and, by the pointy beard of Tlaloc, take a brolly.