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BLOOD: Today’s opportunities to donate blood are at the British School of Osteopathy near Oxford Circus, St John Vianney Parish Centre in Tottenham and Trent Park Golf Centre in Oakwood. See site for terms and conditions.
FILM BIENNIAL: The four-day Artists' Film Biennial begins at the ICA on The Mall today. It's a celebration of artist film and moving image, consisting of screenings, new performance commissions, talks and panel discussions. Prebook, Until 6 July
ART TECHNOLOGY: Digital Revolution, the new exhibition at Barbican, opens today. It looks at the transformation of art, design, film, music and video games since the 1970s, thanks to new technologies. £12.50/£10.50, prebook, until 14 September
WORK OUTDOORS: Make the most of our predicted hot weather by working outside. At Potter's Field Park, right next to City Hall, there's a pop-up outdoor work space, complete with free Relish wi-fi. Free and open to all, just turn up, 12pm-8pm
THAMES SEAL CONSERVATION: The ZSL London Zoo pop-up shop on Carnaby Street has ZSL Conservationist Joanna Barker talking about her work to monitor and conserve harbour seals in the Thames Estuary. Free, just turn up, 1pm/1.30pm/6pm/6.30pm
ANTIBIOTICS SCIENCE: St George’s University in Tooting has a free lecture about how bacteria are growing resistant to antibiotics, with thoughts on what we can do. Learn about ground-breaking research, see some of the equipment the researchers use and chat to the university’s experts. Free, prebook, 5.30pm
LONDON FIRE BRIGADE: The London Fire Brigade Museum in Southwark has a lecture about the Fire Brigade during the First and Second World Wars, and the lasting legacy the wars had on the Fire Service. £10, prebook, 5.30pm
VICTORIAN SEX: Head to Guildhall Library for an evening about sexual desire, practises and deviance in the Victorian era with cultural historian Fern Riddell, followed by a signing of her new book, The Victorian Guide to Sex. £5, prebook, 6pm
WINNING SCIENCE: Tonight's talk at the Royal Institution explores the science of winning, looking at the technology we have developed to use in sport since the Ancient Greek Olympics. The speaker is Professor Steve Haake, Director of the Centre for Sports Engineering Research at Sheffield Hallam University. £12/£8, prebook, 6pm
BOHEMIAN PARIS: The Courtauld Gallery in Somerset House stays open late for an evening themed on Bohemian Paris. Talk and tipple in the Absinthe Den, strike a pose in the photo booth or dance to the music of 1890s Paris. £6/£5, prebook, from 6pm
EROTIC COMICS: Explore the erotic side of the underground comic industry at the British Library. The evening is split into two parts. Melinda Gebbie talks to Rachel Cooke of The Observer about explicit graphic novel Lost Girls. Then Oliver Frey, one of the most prolific gay fiction illustrators, talks to Rupert Smith about his art and career. Over 18s only. £8/£5, prebook, 6.30pm
HACKNEY AT WAR: Head to Hackney Archives in Dalston to learn about daily life in Hackney during the First World War, in a talk by Professor Jerry White, author of Zeppelin Nights: London in the First World War. Free, prebook, 6.30pm
UKE ON A BOAT: Request a song, then sing along...accompanied by lots of ukulele players. KaraUke is back, and this time it floating on the Tamesis boat off Albert Embankment. Free, prebook via FB event, 7pm
COMEDY: Head to Cafe Crema in New Cross for a comedy night MCd by Ed Kiely, with performances by Matthew Crosby, Bec Hill and more. Pay what you can, just turn up, 7.30pm
Find more London events in our Free & Cheap events listings. Want to see your event in these last-minute listings? Email us at email@example.com at least 48 hours before the event, and we will consider it for inclusion. Note, due to high volumes of email, we can’t always reply.
Good Cause of the Day
In aid of preserving and restoring St Pancras Old Church, cartoonist and author of The Gin Lane Gazette, Adrian Teal hosts a talk tonight. He will speak about 18th century quack Chevalier Bartholomew Ruspini, who was appointed Surgeon-Dentist to the Prince of Wales in 1787. He established the Royal Cumberland Freemasons’ School, which was first located near where St Pancras Station now stands. There is a minimum donation of £10, and tickets can be booked here
London Connection Puzzle
Your clues so far have been LEONARD STREET and GREAT GEORGE STREET. Today's addition is MATTHEW PARKER STREET. What's the London connection. No need to email in as we already have a winner. Clue number 4 tomorrow.
From the Archive
Where could you find the only remaining wooden escalator until this year? Which is the least-used station on the network? And where can you wait at an award-winning bus shelter? Find these answers, and more, in Geoff Marshall's Secrets of The Central Line video, from this time last year. Catch up on the now-complete series and the rest of our behind-the-scenes-London videos on our YouTube channel.