Ruislip Lido, a 60-acre lake with golden sands and woodland backdrop in Hillingdon, West London, looks like a holiday resort on a hot summer's day. But swimming is strictly prohibited and enforced. The reservoir, opened as a lido in 1933, once attracted thousands of swimmers in the 1950s and 1960s, with London Transport running double-decker buses on three routes every 20 minutes. However, declining water quality and rising admission charges in the 1970s led to a drop in visitors, and a fire destroyed the main building in 1994. Swimming has not been allowed since.
Why swimming is banned
Several dangers make swimming unsafe. Blue-green algae blooms can be toxic to humans and animals, and algae may remain in the water even after a visible bloom clears. Cold water shock can cause involuntary gasping and rapid breathing, endangering even strong swimmers. The lake bed has uneven depth with sudden drop-offs, and submerged objects, debris, and vegetation pose additional hazards. Swimmer's itch, caused by microscopic parasites, can also occur. Hillingdon Council confirmed there are no plans to reintroduce swimming due to safety concerns. Dogs are also banned from swimming, though a dedicated dog beach is available.
Why it's still worth a visit
Despite the swimming ban, Ruislip Lido is a free attraction with plenty to do. A splash pad with water jets and spray features is open from April to September, located near the main beach and pirate ship play area, free for children to cool off. The beach itself offers golden sand for sunbathing, sandcastles, and beach games, providing a seaside feel without a long drive or high parking fees.
The Ruislip Lido Railway, a 12-inch gauge miniature railway, runs between Woody Bay station near the beach and Willow Lawn station near the car park, offering scenic rides around the lake and through Ruislip Woods. Two children's playgrounds include an 18-metre wooden pirate ship with nets, climbing frames, and slides. An outdoor gym is also available.
Ruislip Woods, a designated nature reserve, surround the lido with ancient semi-natural woodland, coppice woods, grassland, ponds, streams, and marshland. The Woodland Centre provides information on history and traditional crafts, and houses the Lakeside Cafe serving snacks and drinks. The nearby Water's Edge pub offers carvery and pizza. Picnics are welcome, but barbecues are not permitted.
Getting there
Ruislip Lido is at Reservoir Road, Ruislip, HA4 7TY. By public transport, Ruislip Tube station (Metropolitan and Piccadilly lines) is a 10-minute taxi ride or 34- to 42-minute walk away. Bus routes H13 and 331 stop nearby. By car, parking costs £8.90 for up to three hours or £16.90 daily from May to August, and £5.80 for three hours or £8.30 daily the rest of the year. No alternative car parks exist, and parking restrictions are strictly enforced, so public transport is recommended. Opening hours vary by season: May to August 9am-9pm, September 9am-7pm, October 9am-5pm, November to February 9am-4pm, March 9am-5pm, and April 9am-6pm.
