British moth is an 11-foot (3.4 m) sailing dinghy designed in 1932 by Sydney Cheverton.

British Moths were the first class to use this famous stretch of water for dinghy racing, and for a time it was known as the "Brent One Design".

The British Moth National Championship trophy is still the Brent Cup.

After World War II, sailing was not resumed on the Brent Reservoir and the fleet became scattered.

In 2004 the British Moth Boat Association funded the development of a new hull mould designed by Ian Howlett.