Even if you've never set foot in Greenwich, you'll probably be familiar with the grand stone facade of its Old Royal Naval College. This 18th century building is a much-used movie location that pops up endlessly in period dramas and fantasy flicks, including Bridgerton, Pirates of the Caribbean, Batman, Star Wars and Indiana Jones. Now, it's having a bit of fun with its cinematic history by inviting members of the public to turn up in costumes from some of the famous films, in a mammoth Guiness World Record attempt to host the largest gathering of people dressed as TV and film characters. So if you're a closet cosplay fan, the leading light of Halloween fancy dress parties, or just an all-round silly billy who loves putting on a novelty outfit, this one's for you. No need to book: just turn up on the day at 2pm, and have a ball.
There'll be giant photo props on hand including a Bridgerton throne, Cruella's car, and a Batmobile, plus film-themed refreshments. But beware, you can't just throw on a cape and rock up: officials will check you're wearing recognisable elements from specific movie characters before you can join in the fun.