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BLOOD: Today’s opportunities to donate blood are at The Hop Exchange in Southwark Street, Islington Town Hall, Sir James Hawkey Hall in Woodford Green and Central Library in Bromley. Free, see site for terms and conditions
ART: Central St Martin's presents Work in Progress, an exhibition displaying BA Graphic Design students' creations. Free, until 21 March
PONGATHON: Free the ping-pong player inside you: the eclectic Rich Mix in Shoreditch has tables available. Music and visuals accompany the wiff waff. The event is free but to book a table cost £20, prebook, 6pm-11pm
GIN: Hear about how 18th century London went mad for gin in a lecture at the Royal College of Physicians near Regent's Park. The ticket price includes a glass of wine, which we can't help thinking is a missed opportunity to dispense some mother's ruin. £10, prebook, 6pm
QUIZ: The Grant Museum hosts the fun event (Not in a) Pub Quiz, with six rounds of popular natural history questions. Call your brainiest friends and create a team up to five people. Free, prebook, 6.30pm
VIKINGS: The (possibly) horned-ones are big news at the moment with the British Museum's latest exhibition. Head along to this talk at the Citie of Yorke pub in Holborn to hear Imogen Corrigan describe their motivations in attacking Britain. £5, prebook, 6.30pm
HARD ROCK: The Global Battle of the Bands takes place at The Hard Rock Cafe, where the nine best and most voted emerging bands in London will play live during the evening. Rock mixes with good cause, as money raised will go to charity. £3, just turn up, 7pm
IMPROBABLE: Marc Abrahams and a gaggle of celebrated persons perform Dramatic Improbable Readings from bizarre and genuine research reports, at the Conway Hall. This is research that first makes you laugh, then makes you think. £6/£3+bf, prebook, 7pm
HIPPY STYLE: Get crafty and design your own flower power headband at Drink, Shop, Do in King's Cross. All materials provided, you just have to feel all 'peace & love'. £12, prebook by email or just turn up, 7pm
CINEMA NIGHT: Short Sighted Cinema presents an evening of short cinema about drugs at the Ritzy in Brixton. A Q&A session with the filmmakers follows the screenings. £3/£4, prebook, 7.30pm
COMEDY: The Comedy Knights are ready to start the fight to amuse you, with an Alternative Live Comedy night in the iconic Whirled Art Cinema near Loughborough Junction Station. £6/£3+bf, prebook, 8pm
Our friends at coffee start-up Pact are on a mission to get London drinking better, fresher coffee. Sign up here for coffee deliveries using voucher code ldn14 and Pact will send you your first 250g bag for just £1 with free P&P. For more info and T&Cs click here.
Good Cause of the Day
Have you ever heard of the Big Dig? Well, whether you're a veteran gardener or new to it, the Big Dig encourages people to get down to their local gardens and learn new skills. Find your nearest location here and do something good for your local garden on Saturday 22 March. Free, just turn up, various times
London Connection Puzzle
A new puzzle starts today, inspired by an idea from last week's winner Mary McGilloway. Your first clue is BATTERSEA PARK. The second clue will appear tomorrow, after which you can start guessing the London connection.