- Liberty's timbers come from ships.
- How were London's postcodes invented?
- There are more daily TfL bus users than Scottish people.
Things to do today:
CAKE AND BAKE: Head to the decorating classroom for lessons from leading cake designers, get tips from master patissier Eric Lanlard and meet stars from the Great British Bake Off at The Cake and Bake Show including Nadiya Hussain and John Whaite. £12/15, book in advance/just turn up, all day from 10am (until 9 October)
KEW'S GREAT PAGODA: Discover the history of the Great Pagoda and the chinoiserie craze of the Georgian period with lectures, a workshop, exclusive access to Kew Palace and a guided tour of the gardens. £85, book in advance, 10.30am
GRADUATE RECRUITMENT: Find your next job at the National Graduate Recruitment Exhibition at Olympia. Free, book in advance, all day (until 8 October)
JAZZ AGE PHOTOGRAPHY: Biographer Terrence Pepper discusses the life and work of fashion photographer James Abbe, a man famous for his portraits of Fred Astaire and the Dolly Sisters among others. The Fashion & Textile Museum. Free with exhibition entry (£9.90), just turn up, 11.30am
AFTER DARK FAMILY FUN: Take the kids for a walk along a nature trail after dark and explore the secret part of Bushy Park. £15 per family, book in advance, 6pm
LATE AT TATE: Veil by Iranian artist Shirazeh Houshiary is the inspiration for the installations, DJs and spoken word at this Late at Tate Britain. Free, just turn up, 6pm
CAMPFIRE STORYTELLING: As the days get shorter, huddle around a campfire with sing-a-longs, storytelling and Bowie-like pop from Gwyneth Herbert in a secret east London location. £8/£10, book in advance/just turn up, 7pm
1920s SPEAKEASY: Don your dandiest attire for live cabaret and prohibition-inspired cocktails at a secret candlelit venue. £20, book in advance, 7pm
MEDICINE: Chief Medical Officer Dame Sally Davies asks whether we are at the end of modern medicine, with a talk at the Royal Institution. £18, book in advance, 7.20pm
JOSIE LONG: Comedian Josie Long showcases her eighth solo show and regales with tales of optimism and hopefulness at Soho Theatre. £16, book in advance, 9.15pm
90S MUSIC PARTY: Unleash your inner Spice Girl dancing to the best of 90s music at O2 Academy2 Islington — expect Britpop, dance anthems and hip hop. £5-7, just turn up, all night from 10.30pm
Good cause of the day
SLEEP OUT: Help raise awareness of homelessness and fund new shelters in west London with Glass Door, by sleeping outside in Duke of York Square, Chelsea. There's no registration fee or fundraising minimum but applicants aim to raise £500.