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FLOG IT!: Dig those old treasures out of your attic — BBC auction show Flog It! holds a valuation day at the RAF Museum in Colindale. Simply take along up to three antiques and collectables that you might be interested in selling and get them valued by experts for free. 10am-4.30pm
LUNCH LECTURE: Gresham College's lunchtime lecture focuses on the psychology of doing nothing. Professor Helga Drummond talks about the risks and costs that businesses and individuals incur by avoinding making a decision and instead doing nothing. Free, just turn up, 1pm
VANISHING FOR THE VOTE: The theme of tonight’s talk at the National Archives in Kew is the 1911 census. Despite decades of campaigning, no woman had won the right to vote, so Suffragettes urged women to boycott the census. Free, prebook, 6pm
PLAYWRITING PRIZE: Tonight’s National Theatre Platform marks 10 years of the Bruntwood Prize, the UK’s biggest playwriting competition. Panellists are director Michael Buffong, playwrights Duncan Macmillan (a previous winner of the Prize) and Simon Stephens, and journalists Miranda Sawyer and Matt Trueman. £4/£3, prebook, 6pm
TALK TO ME: This month’s social event, aiming to get strangers talking, is centred around the topic of New Year’s Resolutions. Go along to The Square Pig in Holborn prepared to have conversations with plenty of new people. Free (donations welcome), prebook, 7pm
FOLK RISING: Head to Cecil Sharp House in Camden for Folk Rising, a platform for a new generation of folk music artists to showcase their work. Tonight's performers are Hickory Signals, Jinnwoo, David Roberts and Nick Rasle. £5, prebook, 7.30pm
BOOK SLAM: Book Slam is back at Clapham Grand and kicks off 2015 with a selection of new writing. Eliza Robertson reads from her debut short story collection, Wallflowers, plus expect spoken word, poetry, art and comedy. £6/£8, prebook, 7.30pm
KENNETH WILLIAMS: Hackney Picturehouse offers an opportunity to see comic performer David Benson performing his semi-autobiographical show Think No Evil Of Us which is all about Kenneth Williams. £10/£8, prebook, 8pm
NAPOLEONIC WAR: Author Jenny Uglow explores the many ways in which the Napoleonic War touched the lives of ordinary people in a talk hosted by the National Army Museum. Takes places at The Army and Navy Club on Pall Mall as the museum is currently shut. £10, prebook, 8pm
OBNOXIOUS FEMINIST: Her words, not ours. Megan Ford takes down the patriarchy with nothing more than sketches, characters, songs and some wigs at the Museum of Comedy in Bloomsbury. £10/£8, prebook, 8.30pm
BLOOD: Today’s opportunities to donate blood are on Belvedere Road, outside County Hall, Waitrose Car Park in East Finchley, Minster Church Hall in Croydon and the usual donor centres. See site for terms and conditions. Scared of donating blood? Watch our video.
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
Get digging around in your wardrobe because tomorrow is Woolly Hat Day. Put on your woolliest, craziest or cutest hat and make a donation to St Mungo's Broadway to help homeless people. You can also buy hats donated by the likes of Bryan May, Ed Sheeran, Ricky Gervais and Vivienne Westwood in the Woolly Hat Auction.
From The Archive
This may not be one to mention, what with Valentine's Day on the horizon, but if you're looking for a way out, we rounded up the best places to break up with people in London.