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BLOOD: Today’s opportunities to donate blood are at Framestore/Aegis Media in Margaret Street and St Olave Parish Church in Fenchurch Street. See site for terms and conditions
LONDON ART: Ben Uri Gallery presents the exhibition Painting London, in its Cork Street gallery. Displayed scenes show the city, by Suzanne Perlman. Free, just turn up, until 17 May
LEWISHAM FILM: Several events take place as part of the New Cross Film Festival, but we're liking the look of this documentary about the campaign to save Lewisham Hospital. There are six screenings throughout the afternoon at New Cross Learning. Free, just turn up, from 12pm
GIN HISTORY: Learn about the use of alcohol in medical procedures throughout history at the half-day Intoxicating Walk Down Gin Lane around Lincoln's Inn Fields and the Royal College of Physicians. £25, prebook, 1.30pm
LONDON FOG: Guildhall Library hosts a talk about London Fog, which inspired many writers and artists from the 1840s to the 1950s. Dr Christine L Corton talks about the work of Charles Dickens, Robert Louis Stevenson and more. £5, prebook, 6pm
WAR POETRY: Keats House Poetry Ambassadors host a reading of World War One Poetry at the Barbican. Free, prebook, 6.30pm
FREE FILM: At Friends House on Euston Road there is a free screening of Africa United, the story of three Rwandan children walking 3,000 miles to the football World Cup in South Africa. Followed by a discussion with the director, Debs Patterson. Free, just turn up, 6.3opm
ART DOCUMENTARY: DocHouse screens Tim's Verneer at the Institute of Contemporary Arts. The documentary follows a millionaire inventor who spent eight years trying to recreate a 17th century painting with his own hands. £10/£8, prebook, 6.30pm
SCIENCE LATES: The Science Museum's monthly adults-only late night event takes place tonight, with a musical theme. Get dancing at the silent disco, have a turn at playing in a steel band, or make your own set of panpipes to take home. It's also a last chance to see the Collider exhibition. Free, just turn up, 6.45pm
LONDON PEOPLE: Learn about the people whose inventions and ideas helped to shape London into what it is today. The Makers of Modern London takes place in Cowcross Street, and proceeds go to charity. £10, prebook, 7pm
COMEDY KNIGHTS: The Big Wednesday Comedy Club comes to Barbican courtesy of Comedy Knights. Tonight's headliner is Jessica Fostekew, with Ean Luckhurst, Harriet Kemsley, Rory O'Hanlon, James Shakeshaft and Michael Stranney. £7, prebook, 8pm
LITERARY MISCELLANY: Bethnal Green Working Men's Club's Homework returns for its seventh season. We're promised a night of 'literary miscellany' where performers attempt a writing style that they are not familiar with. The theme is 'heist'. £8, just turn up, 8pm
TERRACOTTA FILM CLUB: Head to the Prince Charles Cinema for a screening of Election (Hak se wii), a Hong Kong cinema classic about a power struggle, which has been likened to The Godfather. £5.50/£8, prebook, 9pm
Good Cause of the Day
Continuing with the prominent theme of film, the Independent Filmmaker's Ball takes place tonight at Cafe de Paris in Leicester Square. The event is part of Raindance Film Festival, and all proceeds go to The Independent Film Trust, which provides financial support to talented young filmmakers. Tickets are £15, and can be bought here.
London Connection Puzzle
Your first clue was KNIGHTSBRIDGE. Today's clue is BIRDCAGE WALK. What's the London connection? EDIT: we now have a winner so no need to email.
From the Archive
Which area of London has the most stations named after it? A trivial question, some might think, but this is what we were busying ourselves with on this day in 2012. Any Northern Liners might believe the answer to be Clapham — we're sure we travel through at least eight Clapham stations when travelling into central from Balham — but the answer might surprise you. Find out here.
Name That God!
This week's picture puzzles show deities, demigods and...today, a mythical creature. Whose malformed legs are on show here, and where could you find this sculpture until very recently? Why is it no longer there?
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