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SECRET LONDON: The Serco Prize for Illustration is all about secret London. See 50 of the best entries at the London Transport Museum from today until 10 December. Admission £13.50 includes entry to museum and unlimited visits for one year. Just turn up, from 10am.
LIGHTS: it's the Regent Street switch on with a performance from Matilda, some opera and trumpets and pushing the button are Team GB and ParalympicsGB athletes including Olympic Long Jump gold medallist Greg Rutherford and Paralympic couple Sarah and Barney Storey. Just turn up, free, from 5.30pm.
SKATE TO SINATRA: Ice Rink Canary Wharf lays on a band to serenade you with Sinatra as you skate. One hour session tickets £12.50 for adults, £8.50 for kids. Book a session in advance.
LUNCHTIME MUSIC: take your packed lunch to the piano recital by Tanya Ekanayaka at St Martin in the Fields. Just don't make any rustling noises. Free, just turn up for 1pm.
IMPRO: Watch an improvised story show by Storybag, followed by improvised comedy from the Maydays at The Miller, London Bridge. Entry £5, £2.50 for students and NHS workers from 8-10pm.
GIVE BLOOD: you can put a deposit in the blood banks today at Bishopsgate Institute by Liverpool Street and Lambeth Town Hall in Brixton.
VIOLS: The Royal College of Music presents the closing concert of the International Festival of Viols. Find out exactly what a viol is with New Wine in Old Bottles. Tickets £10, book online. Starts 6pm.
DRINK: Real ales, ciders and perries at the Prince Regent, Herne Hill during their five-day beer festival.
SCIENCE: Are you afraid of science? Go to the Royal Institution and get over it with a lecture and a musical comedy performance. Tickets are £10, please book. Run 7-8.30pm.
HORROR/COMEDY: Aorta Burst film club present The Refridgerator and The Big Meat Eater in a double bill at Roxy Bar and Screen, Borough High Street. Tickets £3 on the door and it all starts at 7pm.
EVOLUTION: Noted science communicator Matt Ridley talks at the Adam Smith Institute about the parallels between the works of Darwin and Smith. Free, prebook, 6pm
BRAZILIANS: Granta launches its latest issue with a clutch of young Brazilian novelists at Foyles. Free, just turn up, 6.30pm.
LIVE FICTION: Listen to new live fiction themed on treason and plot read aloud at the Liars’ League downstairs at The Phoenix pub, Cavendish Square. Just turn up, £5 on the door, starts 7.30pm.
Random London Fact of the Day
On the anniversary of the Battle of Turnham Green (1642) we share the confusing fact that the eponymous Turnham Green tube station is actually situated on Chiswick Common.
It could be misty and drizzly again, but it might also be quite bright. Your temporary editor isn't very good at waxing lyrical on the state of the skies but BBC Weather will keep you posted.
Join sports and social club 8th Day Adventure for 12 months for £25.
Random Hidden False Rumour Of The Day
M@ fact true or false number 2: M@ doesn't live in London.