Things To Do In London Today: Friday 22 March 2013

If you’ve not already done so, you can subscribe to these daily listings and have them delivered to your inbox at 7am every morning. Alternatively, subscribe to Londonist Daily to hear about events further in the future

GIVE BLOOD: Today’s opportunity to donate blood is at St Olave Parish Church on Fenchurch Street. Free, just turn up, see site for times and conditions

SUPPORT WORLD WATER DAY: World Water Day is a United Nations-led day of awareness, highlighting the plight of millions of people around the world who do not have access to clean water or sanitation. Please take a look at this interactive page, detailing the story behind and the importance of clean water, plus ways in which you can help. You can also join a walk they are hosting, details below.

TIGERS ARE GRRREAT: Tiger Territory at London Zoo finally opens to the public today after a huge redevelopment to make way for the 2,500sqm enclosure. It is your chance to see the critically endangered Sumatran tigers relaxing, prowling, and most probably sleeping and/or licking themselves. Free with zoo ticket

MUSEUM LATES: Unwind after work with a spot of culture at the British Museum, National Gallery or National Portrait Gallery. Free, check websites for closing times and events

ART: Neil Stokoe's All Things Must Pass exhibition opens today at The Piper Gallery. It looks at Stokoe's most recent paintings that address acute feelings of pain, despair and loneliness. Free, just turn up, until 27 April

LOCO FOR COCO: The Chocolate Festival returns to the Southbank Centre from today for its 10th year of chocolatey deliciousness. You can create your own chocolate bar, try chilli chocolate, learn how to stuff chocolate and much more. Free, just turn up, until 24 March

ROYAL SOCIETY CONTRIBUTORS: Discover the unsung heroes whose graphic skills were indispensable for the meetings and publications of the early Royal Society (1660-1720). You may recognise some names, but the majority remain little known. Free, just turn up, 1pm

WORLD WATER WALK: To celebrate World Water day, Pump Aid will be hosting the World Walks for Water and Sanitation event, where you can walk from the famous site of the Broad Street Pump to Pump Aid's offices in Mayfair, followed by drinks and nibbles. Free, just turn up, 5.30pm

REEL WORDS: There are poems from and for Iraq at Reel Words at Rich Mix tonight, featuring Joe Dunthorne, Kirsty Irving, George Szirtes, Ghareeb Iskander, Sabreen Kadhim, Zahir Mousa and others. Free, just turn up, 7.30pm

GREAT SEXPECTATIONS: Tonight, Juicy Productions present Great Sexpectations - The Erotic Awards 2013 Semi Finals. The Erotic Awards are a celebration of sexual creativity and each year the finest performance stars of the erotic circuit perform in this exciting Semi Final cabaret show. The show also raises money for Outsiders, a sex and disability charity. £25/£20, prebook, 7.30pm

ROLLER SKATE: The Friday Night skate starts at Wellington Arch. Anyone who feels competent on skates is welcome to join. Free, just turn up, 8pm

CELL THERAPY: Join Professor Chris Mason as he explores the promise, progress, pitfalls and politics of the ever-growing industry of cell therapy, and how nations are racing to become the best in the field. Please note that it is customary to attend these Friday Discourses in evening or smart dress. £15, prebook, 8pm

INTERACTIVE DINNER: If you enjoy playing with your food, you will most probably like SPEAT. It is a dining experience that transforms the familiar speed-dating format into a series of games and conversations, designed to make you let go of your inhibitions and forget what your mother told you. £15/£12 (tickets include a vegetarian multi-course dinner and a drink), prebook, 8pm

COMEDY: Zoe Lyons headlines Comedy Carnival in Leicester Square this evening, with Alistair Barrie and Andrew Bird. Tickets from £12 plus booking free, prebook, 8pm

ROBBIE WILLIAMS, KIND OF: If you're in the mood for cheesy, cheerful fun why not check out We Love ... Robbie Williams at Primo Bar where Paul Grant Reason's impersonation will take you through Robbie's greatest hits. Free, just turn up, 8pm

Send any tips or suggestions for the following sections to

Random London Fact of the Day

Next time you're heading through the northern fringes of the City, look out for this seemingly anonymous tower block on Bunhill Row. This is Braithwaite House. Here, in their mother's flat, the Kray twins tasted their last true breath of freedom. On the morning of 8 May 1968, police stormed the building, arresting the gangsters and their older brother Charlie. After a lengthy trial at the Old Bailey, the pair were locked up for life, only emerging in public to attend funerals (under guard) and, in Reggie's case, a release to hospital on compassionate grounds, for his terminal battle with cancer.

Good Cause of the Day

The Winnicott Foundation is an independent charity that supports the premature and sick baby units at St Mary’s and Queen Charlotte’s Hospital near Wormwood Scrubs. The neonatal units, part of Imperial College Healthcare NHS Trust, care for around 900 babies a year, some born as early as 23 weeks (17 weeks premature). The charity raises money to provide equipment not available on the NHS, support families and provide developmental care for the babies. If you'd like to help, they have several fundraising activities coming up, including places in the Brighton Marathon (14 April) and the British 10k London run (14 July). Or you can text a £3 donation – WINN00 £3 to 70070. Find more information on their website. @WinnicottBabies

London Weather

Remember how the old nursery rhyme went:

It's raining, it's pouring, the old man is snoring.
He went to bed, with Time Out instead,
Of Londonist, and found it boring.

Or something like that. In any case, it's the rainy bit that's important. It's going to rain. It's going to rain during your morning commute and your evening commute. Perhaps take a leaf out of the old man's book and stay in bed. But with Londonist.