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- London's secret shafts.
- Did you know Prince Philip had his stag do at The Dorchester Hotel?
- London's best loos.
Things to do today:
DRAGONBOAT REGATTA: Watch local companies paddle their way to the finish line in a boat race in Merchant Square. Each team has a dress code, a drummer, and absolutely no experience. Sure to be entertaining then. Free, just turn up, 5pm
CHILDREN'S COMEDY FESTIVAL: Head to Waterstones Piccadilly with your precious little devils for an evening of giggles with some of the funniest authors of children's books, like Arabella Weir and Steve Cole. Free, book in advance, 6pm
MURDER MYSTERY RUN: For a mental and physical challenge, figure out who killed one of the Queen's ladies-in-waiting on a hunt around Westminster. £17-25, book in advance, 6pm
WINE TASTING: Get your summer drinking sorted by sampling up to 30 wines at London's only winery. £25, book in advance, 7pm
PUNK TALK: Hear legendary punk writers Jon Savage and Viv Albertine in conversation, hosted by Kate Mossman, arts editor of The New Statesman. Look around the British Library's Punk '1976-78 exhibition and listen to music by Scratchy, the Clash's tour DJ. £15, book in advance, 7pm
SARDINIAN SUPPER CLUB: Taste the cuisine of one of the healthiest places in the world. Enjoy a four-course meal with wine which may (or may not) help you live to be over 100. £35, book in advance, 7.30pm
EXPERIMENTAL FILM SCREENING: Attend Edge of Frame's Programme Two, an evening of short films featuring hand-drawn visual music and electronic media. Chris King is the special guest, performing live visual music using audio synthesis techniques and live video. £3, just turn up, 8pm
CHOIR CONCERT: To commemorate the 100th anniversary of Cecil Sharp's first ever folk song collecting visit in the USA's Appalachian Mountains, listen to the Cecil Sharp House Choir Concert. £10, book in advance, 8pm
COMEDY: Catch Newsjack host Nish Kumar and BBC New Comedy Award winner Steve Bugeja before they perform at the Edinburgh Fringe. £9, book in advance, 8pm
WICCA TALK: Join the South East London Folklore Society to discover the history and beliefs of the Wicca community. Author Ethan Doyle White will lead the discussion at The Old King's Head. £3, book in advance/just turn up, 8pm
Good cause of the day
MUHAMMAD ALI TRIBUTE: Remember the life of legendary boxer Muhammad Ali with a screening of Oscar-winning documentary When We Were Kings, followed by a panel discussion led by Goldsmiths's Professor Les Black. All proceeds go to Parkinson's UK. £12, book in advance, 6.15pm
Our daily pick of Funzing events
MASTERCHEF TALK: Hear MasterChef 2015 finalist Tony Rodd, the man Gregg Wallace dubbed the Master Chocolatier, talk about his experience on the hit BBC show. £7, 19 July
3D SUNGLASSES WORKSHOP: Make your own stylish shades using a 3D printing pen that lets you draw in the air. £20, 19 July/16 August