Half-Term Holiday Fun in London

Looking for ways to keep the kids entertained this half-term? From glow-in-the-dark slime to mind-twisting museums and spooky festivals, we’ve rounded up the best family-friendly events happening across London. Get ready for a week packed with creativity, laughter and just the right amount of Halloween magic!

FRANKENSLIME at Gootopia

Get your hands gooey at Gootopia’s wildly popular slime workshops — now with a spooky twist! Their special FrankenSlime sessions feature glow-in-the-dark goo and creepy oozing creations your little scientists can take home. It’s the perfect mix of fun and mess (without you having to clean it up!).
📍 Brixton, Lewisham and Wandsworth
💰 Sessions from £17.99 (adults go free)

Halloween Half-Term at Twist Museum

London’s most mind-bending museum gets a Halloween makeover this half-term. Families can hunt for creepy-crawlies in the illusion rooms, solve spooky puzzles and even catch a daily magic show for budding witches and wizards. It’s an eerie adventure with a twist!
📅 Until Sunday 2 November
💰 Entry from £19

POP-Kid Halloween Setlist at Somerset House

Get ready to dance like it’s 1999! Somerset House is throwing a family-friendly pop party packed with 80s and 90s classics — the perfect chance to watch your mini-me groove to the hits you grew up with. Expect face painting, games and appearances from a beloved mascot.
📅 Sunday 26 October
💰 Tickets from £6

Halloween & Day of the Dead Festival at the British Museum

Celebrate culture, colour and creativity at the British Museum’s family festival. Little ones can dive into Hansel and Gretel-inspired sensory play, older kids can craft skeletons and headpieces, and the whole family can sing along to live Mariachi music for the Day of the Dead.
📅 Monday 27 – Friday 31 October
💰 All events are free

Squishmallows Treasure Hunt at John Lewis

Calling all Squishmallow fans! Hidden across selected John Lewis stores are six secret Squishmallows posters. Find them all and enter the draw to win everything from cuddly plushies to £250 e-gift cards. A perfect rainy-day adventure for little treasure hunters.
📅 Saturday 18 – Friday 31 October
📍 Selected John Lewis stores

Whether you’re up for a hands-on craft session, a dance-floor boogie, or a treasure hunt through the high street, there’s something for every family this half-term. Just don’t forget the snacks — and maybe a costume or two!