Best Free Things to Do in London With Kids (2026 Family Guide)

London is one of the most expensive cities in the world — and paradoxically one of the best for free family days out. You can fill an entire weekend with brilliant, memorable, genuinely free activities if you know where to look. Here are the best free things to do in London with kids, tested and approved by families who’ve done them all.

Museums (the obvious giants)

• Natural History Museum: dinosaurs, the blue whale, earthquakes — the single best free family attraction in London. Book the free timed slot ahead.
• Science Museum: interactive galleries, space rockets, the Wonderlab (paid, but the rest is free and huge).
• British Museum: mummies and the Rosetta Stone — better for ages 7+ who can handle the scale.
• V&A Museum of Childhood (Young V&A, Bethnal Green): recently renovated, designed specifically for kids, and superb.
• Horniman Museum: the walrus, the aquarium (small fee), and 16 acres of gardens. A full day out, mostly free.
• National Maritime Museum, Greenwich: ships, maps and sea stories — plus the park outside.

Parks and outdoor adventures

• Diana Memorial Playground (Kensington Gardens): the pirate ship playground — arrive early, it fills up fast.
• St James’s Park: pelicans, squirrels, and the best picnic spot in central London.
• Greenwich Park + Royal Observatory hill: stand on the Meridian Line (outside is free), roll down the hill, enjoy the best view in London.
• Hampstead Heath: paddling in the ponds (summer), kite flying on Parliament Hill, the adventure playground.
• Richmond Park: deer spotting — genuinely thrilling for kids, and free.
• Crystal Palace Park: Victorian dinosaur sculptures in a lake setting. Wonderfully weird.
• South Bank walk: street performers, the skate park, book market, and endless river views.

Views and experiences

• Sky Garden: free, but book 2-3 weeks ahead. Tropical gardens 35 floors up — kids love it.
• Horizon 22: London’s highest free viewing platform. Book ahead, arrive early.
• Tate Modern viewing terrace: free, no booking, great Thames views.
• Changing of the Guard: free, daily in summer — check times, arrive 30 mins early for a spot.
• Street art in Shoreditch: a free open-air gallery; turn it into a treasure hunt.
• Borough Market / Columbia Road: free to wander, samples to try, atmosphere to soak up.

Hidden gems

• Grant Museum of Zoology: 68,000 specimens including the jar of moles — 30 minutes of glorious weirdness.
• Sir John Soane’s Museum: magical for older kids (8+) who like curious things.
• The Bank of England Museum: hold a real gold bar. Small, free, memorable.
• God’s Own Junkyard (Walthamstow): neon wonderland — free entry (donations welcome), incredible photos.
• Little Venice to Camden walk: canal boats, the zoo glimpse, markets at the end. A full adventure, free.

Making free days work

• Picnic. The golden rule — a Tesco meal deal or home-packed lunch saves £30-£40 versus buying out.
• One big thing per day. Kids saturate fast; pair one anchor attraction with a park, not three museums.
• Travel off-peak, kids under 11 free on TfL with a paying adult.
• Toilets: museums and big parks have them; plan around them with small kids.
• Wet-weather backups: keep a free museum in reserve for every outdoor plan. London weather owes you nothing.

For grown-up free time too, many parents find a local book club is the cheapest social life going — and if you’re budgeting the whole family entertainment spend, knowing how much a festival ticket costs in the UK helps you plan the bigger splurges.

Free things to do in London with kids by age group

Different ages need different days. Toddlers and preschoolers (1-4): the Diana Memorial Playground (pirate ship, water play in summer), the V&A Museum of Childhood (Young V&A — designed for small people), St James’s Park (squirrels, pelicans, wide paths for scooters), and the Horniman’s gardens. Keep it short — 2-3 hours max — and plan around naps. The golden rule for this age: one activity, then home. Everything else is bonus.

Primary age (5-10): the golden age of free London. Natural History Museum (dinosaurs!), Science Museum (interactive galleries), the Grant Museum (weird specimens), Crystal Palace dinosaurs, Greenwich Park (meridian line, hill rolling), and the South Bank (street performers, skate park). This age group can handle a full day: museum morning, park afternoon, picnic in between. They’re also the perfect age for the “treasure hunt” framing — a printed list of things to spot (a whale skeleton, a red bus, a street performer) turns any walk into an adventure.

Tweens (10-13): harder to impress, but London delivers: the Imperial War Museum (tanks and planes), the Tate Modern (the Turbine Hall installations are genuinely cool), street art in Shoreditch (give them a camera), the Sky Garden (book ahead — the views impress even jaded tweens), and the Leake Street graffiti tunnel (bring chalk, add your own art). Let them lead the navigation — Google Maps and a bit of independence goes a long way at this age.

Teens (13+): see the teenagers section of our family day out guide — but the free version: Camden Market, Brick Lane, South Bank, God’s Own Junkyard (free entry, incredible photos), rooftop views, and vintage shopping. The trick with teens is framing: it’s not a “family day out,” it’s “going into town.” Same activities, different packaging.

For official family listings and seasonal free events, Visit London’s family section is updated regularly — worth checking before you go, as free exhibitions and events change monthly.

Free London with babies and toddlers: the practical stuff

The activities are free; the logistics need planning. Feeding: all the big museums have family rooms with microwaves for bottles; the V&A, Natural History Museum and Science Museum are the best equipped. Naps: plan around them ruthlessly — a missed nap destroys the afternoon. The parks near museums (Hyde Park by the South Kensington trio, St James’s by the galleries) are perfect for pram naps while older kids play. Changing: museum baby-change facilities are excellent and free — better than any café’s. Getting around: step-free Tube stations matter with a pram — check the TfL step-free map before you go; buses are reliably accessible and toddlers love the top deck.

The takeaway

Museums in the morning, parks in the afternoon, picnic in between — that’s the formula for a brilliant free family day in London. Book the timed slots ahead (Natural History Museum, Sky Garden, Horizon 22), travel off-peak, and you’ll wonder why anyone pays £200 for a day out here.