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BLOOD: Today’s opportunities to donate blood are at Bishopsgate Institute, Emirates Stadium in Holloway Road and St Faith's Community Centre in Dulwich. Free, see site for terms and conditions
CHOIR: Children from one of Southbank Centre's associate schools perform Martin Creed's Work No. 409, the famous Singing Lift, in the foyer of the multi-function centre. Free, just turn up, 11am
PUZZLED PINT: It's like a pub quiz, but with a difference: you have to solve a puzzle to even find out the location of the pub in which it takes place. This month's theme is Spinal Tap, you can find hints on the website. Free, just turn up (if you can!), 6pm CORRECTION: this takes place on Tuesday, sorry.
RESEARCH: Stem Cells and Human Health is the topic of this public lecture about regenerative medicine, at The Royal Society. Free, just turn up, 6.30pm
CINEMA ON THE ROOF: Rooftop Film Club settles down for three days at Kensington Roof Gardens for "Feel Good February" film screenings. Tickets include a drink and a snack, and tonight is 90s themed. £21.50, prebook, 7pm
FREE GIG: Female duo Just Julia, and solo singers Pete Hickman and Will Robert are on stage at The Finsbury in Manor House. Free, prebook, 7pm
POETRY: Words on Monday at Kings Place celebrates Dylan Thomas, the man widely recognised as Wales’s greatest poet. Including poetry performances (£9.50, prebook, 7pm) & Poetry publishers The Tall Lighthouse host a free open mic night at The Poetry Cafe (Free, just turn up, 7.30pm)
STORYTELLING: Spark London Storytelling takes place at the Picturehouse in Hackney. Tonight's theme is Living Together: true stories of sharing the flat with...whoever. £4, prebook, 7.30pm
Bermondsey start-up Pact Coffee is on a mission to get London drinking better, fresher coffee. Get your first 250g bag of hand-roasted coffee delivered to your home or office for only £1 with free P&P. Just use the code londonist14 at checkout. For more info and T&Cs click here.
Good Cause of the Day
Tonight Conway Hall plays host to an evening of music and charity: A Resonance FM Fundraiser presented by The Pod Delusion & Little Atoms. The evening features two musical panel discussions, curated by two different radio shows to raise money for Resonance 104.4 FM. This is London's only, and the world's first, arts radio station that has been broadcasting since 2002. £16 (incl. donation)/£6+bf, prebook, 8pm
London Connection Puzzle
Congratulations to Michelle Hodge who was the first to spot last week's connection. St Pancras Old Church, The Blackfriar, Mount Pleasant Sorting Office and Holborn Viaduct are all structures along the River Fleet. Never noticed this ancient river? That's because it's now underground, serving as a sewer. We took a paddle back in 2010. A new puzzle starts tomorrow, as suggested by our winner Michelle.
From the Archive
Spring is still far away and summer is but a dream in the back of Londoners' minds. Get a small ray of sunshine for your day, via this picture taken in Kew Gardens on this day in 2011: this big tree in the wintry sun appears to give off energy.
This week's theme is London's bridge oddities. Today's entry is this seemingly insignificant baluster in the seemingly insignificant Antrim Park, in Belsize Park. It's a little-known surviving fragment of Old Waterloo Bridge, which was demolished in the 1940s to be replaced by the Giles Gilbert Scott span that stands today. The park is worth seeking out. Beside the Waterloo remnant is a well head from the old House of Commons, destroyed in WWII.