Things to do today:
HALLOWEEN TEA: Frankenstein macarons and bloodied finger éclairs are on the menu at Lancaster London Hotel's Halloween-themed afternoon tea. £35, book in advance, until 31 October
LUNCHTIME TALK: Explore the evolution of the English language with a lunchtime lecture at the British Library. £5, book in advance, 12.30pm-1.30pm
9TH CENTURY BRITAIN: Learn about Britain in the 9th century with a talk about Nennius, the author of History of the Britons, at the British Library. Free, just turn up, 6.15pm
POST-BREXIT DIPLOMACY: Former foreign policy adviser Tom Fletcher discusses the future of European and global policy in the post-Brexit context. Lecture takes place at London School of Economics. Free, just turn up, 6.30pm-8pm
COSMOS TALK: Scientist and writer Sean Carroll explains how the laws of physics control the cosmos and human life in a talk at the Royal Institution. £14, book in advance, 7pm-8.30pm
VEUVE CLICQUOT TASTING: Sample three Veuve Clicquot and two Cloudy Bay wines in a tasting at Vivat Bacchus in London Bridge. £20, book in advance, 7pm-10pm
IMPROVISED COMEDY: Live TED-style talks inspire comedy sketches take place in Waterloo's Vaults. The guest expert speakers inspiring the acts of this week's Wunderkammer are pianist Colin Sell and comedian Jay Foreman. £7, book in advance, 7pm
SCARE SLAM: Storytellers share their scariest tales at Blackshaw's Scare Slam at The Old Lion Red Theatre. £7, book in advance, 9.30pm
Good cause of the day
CROWDFUNDING CAMPAIGN: Help students from non-selective schools develop their confidence, CVs and employability skills by donating to Access Aspiration's crowdfunding campaign. The charity needs to raise £25,000 before 26 October to help prepare 280 young Londoners prepare for life after school.
