Mets Lake is a 15-acre carp fishery situated within the Thorney Weir complex in West Drayton, in the Colne Valley. It sits alongside the Colne Brook and is one of two lakes on the complex, which also includes stretches of the River Colne.

The lake holds a stock of more than 500 carp, with fish recorded to over 38 lb and an average size in the mid-doubles.

Originally operated as a syndicate water, the fishery was leased to the Metropolitan Police for over 30 years, making it inaccessible to the public. In 2013 the owners reopened Mets Lake as a day-ticket venue, returning it to general carp anglers.

The surrounding Colne Valley setting gives the water a notably scenic character.