It is easy to find a London activity marked “free” and still arrive to discover that it is full, needs a separate ticket, or is aimed at a different age group. For October 2026, the safest way to plan is to start with a confirmed date, then check the small print on age, booking, venue access, and travel. The listings below were checked against official organizer pages on September 29, 2026. Dates that were not published by an organizer are left out.
Library sessions are the simplest low-cost starting point: several confirmed Kensington and Chelsea listings are free, local, and do not require advance booking. They are recurring programs, so use the October dates below rather than assuming every week follows the same schedule through school breaks.
The library event pages give an address but do not spell out step-free access, sensory accommodations, or accessible restroom details for each branch. If these affect your visit, contact the library before traveling. For route planning, TfL’s accessible journey planner lets you select step-free access, limit walking, and check live disruptions. Travel fares are separate from the free activity.
The BFI London Film Festival lists The Mermaid Parade at 12:15 p.m. on Saturday, October 10, in the BFI Southbank foyer. This 75-minute, free drop-in workshop invites children to make mermaid tails with collage, paint, and other supplied materials, inspired by the animated film Julián. No advance booking is required, but entry is first-come, first-served and subject to capacity. The BFI does not state a minimum age for this workshop, so ask the organizer if you need an age-specific recommendation. Check the official BFI workshop page before setting out.
BFI Southbank is close to Waterloo station, which the BFI says has step-free entrances and exits; several bus routes also stop nearby. See BFI’s current travel information and its access information. The workshop is free; do not assume that a separate film screening at the festival is also free. Check the individual film’s ticket page and age certificate.
The museum’s confirmed half-term program runs October 24–31 and includes activities about London legends, superstitions, and Docklands history. Some elements are drop-in, while others require a free ticket, so check each activity instead of treating the entire program as one booking. The official half-term program lists the full set.
General admission to the Docklands galleries is free and unticketed, daily from 10 a.m. to 5 p.m.; the family activities above have their own conditions. The building has lifts on every floor, and buggies are welcome. West India Quay DLR is about a three-minute walk; Westferry DLR and Canary Wharf (DLR, Jubilee, and Elizabeth line) are also nearby. Check the museum’s plan-your-visit page and access guide for current details. The Mudlarks family gallery is a separate popular area for which the museum recommends booking ahead.
The National Gallery’s family workshop is scheduled for Tuesday through Thursday, October 27–29, with sessions from 11 a.m.–1 p.m. and 2–4 p.m. It is free, for families of all ages, and explores watercolor and color mixing inspired by Renoir. Adults and children participate together; the gallery says lone adults are not admitted. Places are limited and allocated first-come, first-served, with possible waits at busy times. Donations are welcome but not required. See Playing with Colour.
The gallery is at Trafalgar Square. Its Sainsbury Wing is the main entrance and has step-free access; staff can help visitors for whom queueing is difficult. Check the National Gallery access page and use TfL’s planner for a route that suits your family.
Royal Museums Greenwich has published a free family program at the National Maritime Museum across October 24–November 1. Confirmed examples include Paper Silverfish on Sunday, October 25, 11 a.m.–1 p.m. and 2–4 p.m.; The Great Big Bug Show on October 28 and 29 at 11 a.m. and 2 p.m.; and Bugs at Sea on October 30 at 11 a.m., noon, 2 p.m., and 3 p.m. Activities use crafts, storytelling, poems, music, movement, and sensory objects. The event page does not specify a minimum age or whether each activity needs its own booking, so check the latest listing before leaving. Free museum admission tickets can be booked online. The activities and galleries are free, but Cutty Sark and the Royal Observatory are separately ticketed attractions, so don’t add them to a no-cost plan by assumption.
See the National Maritime Museum half-term schedule and official ticket information. The museum has lifts serving gallery floors. Cutty Sark DLR is the closest DLR station, about 600 meters away; Greenwich and Maze Hill are rail options, and the “National Maritime Museum” bus stop is on Romney Road. See the museum’s accessibility guide and accessible travel information.
If a session fills or the weather turns, use a venue where the visit itself is free. Greenwich Park is an outdoor option with views across London, paths, gardens, and a playground. The Royal Parks lists pedestrian gates as open 6 a.m.–8 p.m.; the park has a free mobility buggy service, but volunteer availability can change, so confirm its service information first. Check the Greenwich Park visitor page, mobility buggy details, and TfL before traveling.
For an indoor backup, London Museum Docklands’ permanent galleries are free and do not need a ticket, and the National Maritime Museum’s galleries are also free. These are useful even when a workshop is full. Check opening times on the day: family events may run while galleries follow their ordinary hours, and holiday periods can bring queues.
That last check matters most: a dated listing is not a guarantee of entry. Reconfirm with the organizer shortly before your visit, especially during half-term.
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