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BLOOD: Today's opportunities to donate blood are at St Mary Abbots Centre in Kensington, The Hop Exchange on Southwark Street, and the YMCA Hall in Barbican. Free, see site for terms and conditions.
SWLTV: A news and features YouTube channel dedicated to south-west London (creatively named South-West London TV) launches today.
FREE WALKS: This August and September the Clerkenwell and Islington Guides Association offers free walks during weekdays. The first is today, so pop along and get some culture in your lunchtime. Free, prebook, until end of Sept
#BOMBTHEBOX: In the coming weeks, Boxpark Shoreditch will see six different international graffiti crews drop in every Sunday to #BOMBTHEBOX with their collective creativity. From today you can see previous works of the artists on display on the upper deck. Free, just turn up, until 8 September
TIME: Roundhouse encourages us to see time in a different and rather spectacular way with its new light sculpture installation, Timepiece. A vast 8-metre faceless clock is suspended above the Roundhouse’s epic Main Space. Pay what you like, can be prebooked once open, until 25 August
MR PENFOLD: Street artists and screen-printer Mr Penfold displays his bright and bold works at 69 Camden High Street from today. Free, just turn up, until 4 August
BARBA: Gallery@oxo hosts Barba, a photography exhibition by Bruno Melling looking into the intimate world of Italian barbers in London. Free, just turn up, until 4 August
BOB THE CAT: Meet James Bowen and Bob the Cat at Waterstones Covent Garden for a book signing of their latest release, The World According to Bob (please note that as Bob does not have opposable thumbs he is unfortunately not able to sign the books himself). Free, just turn up (but get there early as it will be very popular), from 12.30pm
OPERATING LONDON: Visit the Old Operating Theatre for a family workshop discovering the difficulties surrounding St Thomas' hospital admission in the 19th century. Free, just turn up, 2pm
THEATRE: Rory Kinnear and Lyndsey Marshal talk to Al Senter about their current roles as Iago and Emilia in Othello, at the National Theatre. £5/£4, prebook, 3pm
ART: First Thursdays is back again tonight, opening up over 170 East London museums and galleries until late with free talks, exhibitions and events. Free, just turn up, see site for listings
POETRY: The East Village Pop-Up Shop in Westfield Stratford welcomes the Poems of Place Poetry Slam tonight, where five 'slammers' test their lyrical athleticism in a bid to be crowned 'Champion Slammer'. Free, RSVP to email@example.com by 12pm, from 6pm
ICELAND: Rambo Akbar, a film by Liam Scully based in a small Icelandic town, explores how a culture of mistrust and fear can affect the attitude of the individual and the collective. It screens at The Residence Gallery tonight. Free, just turn up, 6.30pm
UGANDA: The Institute of Contemporary Arts screens God Loves Uganda, a shocking documentary about a group of earnest, young missionaries from Middle America on their religious crusade to Uganda. £10/£8, prebook, 6.30pm
REGGAE: The Moon Hop, a monthly reggae night at Bethnal Green Working Men's Club, celebrates its first birthday tonight with live music and a Caribbean kitchen. Free before 10pm (£3 after), just turn up, from 7pm
CLASSIC CARS: Head to Greenwich Market for a Mean OldTimers Classic Car and Motorcycle Club tonight. Free, just turn up, 7.30-11pm
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Good Cause of the Day
The Happy Gallery is a theme based art and design collective that donates 50% of its sales from pop-up galleries and online store to charity. This summer it is popping-up at Coningsbury Gallery with Making Waves, an exhibition featuring many different artworks based on an 'Ocean and Pollution' theme. Sculpture, illustration and 3-D art are all on offer, plus 50% of all the sales go to Surfers Against Sewage - an environmental charity that help to improve bathing water quality standards right around the UK. Free, just turn up, until 4 August (although opening reception is tonight 6-9pm)
London Connection Puzzle
Your clues so far have been FROG and SWAN. Today's is CORPORATION. Spotted the London connection yet? Several other people have, so no need to email in. Final clue tomorrow.
London Weather, by Inclement Attlee
Hey, good news. Someone's stolen all the rain clouds and ordered in another heat wave. Srsly. 31 of your finest degrees centigrade. Even more if you reckon in Fahrenheit! It's going to get very hot on the Tube so, to acclimatise in advance, wrap up in your thickest jumper and mittens.