Things To Do In London Today: Monday 22 April 2013

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GIVE BLOOD: Today’s opportunity to donate blood is at City Temple by Holborn Viaduct. Free, just turn up, see site for times and conditions

COMEDY: The free Angel Comedy Festival starts today and runs all week at the Camden Head in Angel. Acts include Abandoman, Daniel Simonsen, Arthur Smith, Jigsaw, Nathan Caton and Tony Law.

ST GEORGE: Dragon-and-maiden events at the Dragon Cafe (St George The Martyr, Borough) include a folk band, tea party, talks and a parade. Local shaman John Constable leads a tour round the area. Events throughout the day.

FOOD FESTIVAL: The Camberwell Food and Drink Festival continues this week. As well as food there will be free cooking demonstrations by local chefs, music, quizzes and face painting. Free, just turn up, until 27 April

BOOM!: It's the Queen's birthday. Well, it was actually yesterday, but the gun salutes are being held today. Head along to Green Park at noon (41 gun salute), or Tower of London for 1pm (62 gun salute).

SHORT PLAYS: Give It Some Room present an evening of short plays by some of our best loved playwrights, including Michael Frayn, Alan Ayckbourn, Fay Weldon and Neil LaBute. £12/£10, prebook, 7pm

FOOD MATHS: This month's Science London event, pleasingly upstairs at The Lamb, is all about the maths of food, from beer to biscuits. The speaker is Chris Budd, whose name sounds suitably like 'Crisp pud'. Free, just turn up, 7pm

LITERATURE: John Mullan asks what matters in Jane Austen? at Kings Place. £9.50, prebook, 7pm

COMEDY: Deborah Frances-White: Half a Can of Worms is a brand new show detailing Deborah's internet treasure hunt to find out more about her birth mother, and the unexpected discoveries along the way. £10/£8, prebook, 7.30pm

SUPERGUITARS: The Vida Guitar Quartet play classical-style music on guitars, and they'd like you to come and listen to them at Southbank Centre. £22, prebook, 7.45pm

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Random London Question of the Day
James O'Malley asks: If you packed as many people into the Shard as physically possible, would it collapse under the weight of everyone? Show your working.

Good Cause of the Day
The Honeypot Children's Charity looks out for "young carers who juggle school and growing up whilst performing a surrogate adult role at home". Basically, kids whose childhood is spent looking after an ill or drug-dependent relatives. As well as supporting such children, the charity also arranges for short breaks where they can make friends and share experiences. If you'd like to support this organisation, they're holding a charity skydive event on 23 June and a Three Peaks challenge on 21 July. Or you can simply donate here. @HoneypotCharity

London Weather
Spring finally wheezed its way into town over the weekend, but now lies recumbent, comatose in an armchair, while at least a week's worth of cloud sneaks in from the west. In summary: bollocks.