King George VI Reservoir and Stains Reservoirs Loop

Starting your walk near the village of Stanwell Moor, just west of Heathrow Airport and close to the M25, this 10 km (about 6.2 miles) loop is a flat, easy stroll ideal for all abilities. The trailhead is accessible by car with parking available near Horton Road, or by public transport via Staines railway station, followed by a short bus ride or taxi to Stanwell Moor.

Getting Oriented and Setting Out

The loop begins close to the entrance of the King George VI Reservoir, a significant water supply for London, constructed between 1937 and 1947. The path follows quiet lanes and well-maintained gravel tracks, with virtually no elevation gain—expect a total ascent of less than 10 feet (3 metres) over the entire route. Navigation is straightforward, but for peace of mind and route accuracy, HiiKER provides detailed mapping and waypoints.

Reservoir Views and Wildlife

As you skirt the perimeter of King George VI Reservoir, expansive views open up across the water, often dotted with sailing boats and flocks of waterfowl. The area is a haven for birdwatchers, with regular sightings of tufted ducks, great crested grebes, and, in winter, large gatherings of gulls and waders. The path is lined with hedgerows and wildflowers in spring and summer, attracting butterflies and bees.

Crossing to Staines Reservoirs

At roughly the halfway point, the route crosses the causeway between King George VI and the twin Staines Reservoirs. These reservoirs, completed in 1902, are part of a network supplying water to London and are designated as a Site of Special Scientific Interest (SSSI) due to their importance for overwintering birds. Look out for the distinctive Victorian-era valve towers rising from the water, a reminder of the area’s engineering heritage.

Historical and Local Interest

The reservoirs themselves are feats of early 20th-century engineering, built to meet the growing demand for clean water in London. The surrounding landscape, once open farmland, was transformed by these vast bodies of water, but remnants of the old countryside remain in the form of ancient hedgerows and mature oaks along the route. The proximity to Heathrow means you’ll occasionally hear aircraft overhead, but the reservoirs’ tranquil waters and abundant wildlife offer a peaceful escape.

Facilities and Practicalities

There are no facilities directly on the loop, so bring water and snacks. The nearest shops and cafes are in Staines-upon-Thames, about 2 km (1.2 miles) from the trailhead. The paths are mostly level and suitable for sturdy strollers, though after heavy rain, some sections can be muddy. Dogs are welcome but must be kept on leads due to the sensitive wildlife habitats.

Navigation and Safety

Waymarking is limited, so using HiiKER for navigation is recommended to stay on track, especially at junctions near the causeway and when returning to Stanwell Moor. The route is exposed in places, so bring sun protection or waterproofs depending on the season. The loop is popular with local walkers and cyclists, but it rarely feels crowded.

This easy, accessible walk offers a unique blend of water views, wildlife, and local history, making it a rewarding outing for anyone exploring the Surrey and west London borderlands.