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BLOOD: Today’s opportunities to donate blood are at The Hop Exchange on Southwark Street, British School of Osteopathy in Trinity Street, Hyde Park Chapel in South Kensington, Church of Jesus Christ in Balham, and the usual donor centres. See site for terms and conditions.
HALF TERM: Yep, it's here. If you’re wondering how to keep the kids occupied, take a look at our October Half Term listing. There are things to do for all budgets and all interests — from bear hunts to London buses, Tudor history to comic books.
HALLOWEEN: The week of Halloween is upon us (remember when Halloween used to just be one day?!?). Our Halloween event roundup covers everything from films to food to family fun.
GALAPAGOS DAY: Head to the Royal Geographical Society in Kensington for Galapagos Conservation Trust’s Galapagos Day, where visitors can learn all about the new Galapagos project. Confirmed speakers include Kelvin Boot, natural history writer and BBC broadcaster, and Ian Dunn, CEO of the Galapagos Conservation Trust. £20/£10, prebook, 6pm
BRITISH ARCHITECTURE: The Royal Institute of British Architects in Portland Place hosts Late Tuesday, an evening of free exhibitions, talks, live music, tours, films and workshops. All activities are inspired by the stories behind the battle to save Britain's historic architecture and its legacy today. Free, just turn up, 6pm
SNOWBOARDING FILM: Union Chapel in Islington is the venue for the UK premiere of Higher. It's the final chapter in snowboarding free rider Jeremy Jones’s Deeper, Further, Higher trilogy of big mountain snowboarding films. £10, prebook, 7pm
BOOK TALK: Author Katharine McMahon presents her latest book The Woman in the Picture at Hatchards Piccadilly. The book is a portrait of life in 1920s London as seen through the eyes of a young woman lawyer who finds herself in the thick of it. The event is free but you need to prebook your place by emailing firstname.lastname@example.org. Free, prebook, 7pm
CRAP FILM CLUB: The group which celebrates the movies that went straight to DVD is at The Book Club in Shoreditch for a screening of Teen Witch, a film which cost $2,500,000 to make but recouped just 1% of that at the box office. £3.50/£4.50, prebook, 7pm
COSY SCIENCE: Head to The Cittie of Yorke on High Holborn for Cosy Science's meet up on the topic of whether everyone should be taking statins to minimise risk of heart disease. Starts with a short informal talk, followed by a discussion. Free, just turn up, 7pm
LANTERN HISTORY: Photographer Steve Lewis is in conversation with Stefan Dickers, Bishopsgate Institute’s Library and Archives Manager, about the history of the Modern Magic Lantern Show in the East End. £7/£5, prebook, 7.30pm
COMEDY: The Hemingford Tickler Free Comedy Night takes place tonight at The Hemingford Arms in Caledonian Road. Acts confirmed are Joel Dommett, Tom Holmes, Anthony Miller, Jenny Collier, Luke Graves, Stella Graham and Eleanor Morton. Free, just turn up, 8pm
SPACE SCREENING: UCL is at Stratford Picturehouse for a screening of Sunshine, with an introduction by a UCL researcher, Jamie Ryan, talking about the facts and fictions of the science on screen. £6.50, prebook, 8.15pm
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
From today until 1 November, the Interior Designers' Pantomime takes place at the Bloomsbury Theatre. Leading figures from the world of design and fashion are coming together to raise money for the NSPCC by performing in Peter Pan and the Designers of the Caribbean. Tickets range from £10-£75 and need to be prebooked.
From the Archive
This weekend, ComicCon took place at ExCel. This time last year, we rounded up some photos of the best costumes seen at the event.