The Limehouse Cut is a straight, broad canal in the East End of London, which linked the lower reaches of the Lee Navigation to the River Thames. It now connects to Limehouse Basin as a result of changes made in 1968.
The Cut turns in a broad curve from Bow Locks, where the Lee Navigation meets Bow Creek; it then proceeds directly south-west for 2 miles (3.2 km) through the London Borough of Tower Hamlets to Limehouse Basin.
The Wikipedia page is [1] and the Canal & River Trust page is [2].