The lock is situated close to the former Royal Small Arms Factory now known as Enfield Island Village.

It is the first of the smaller locks upstream to Hertford which were built to allow barges up to a maximum 100 tons.

[2] At the lock are red brick cottages and a Lee Conservancy Board toll office of 1889.

[3] Below the lock, a water maintenance depot, with clock turret on the cruciform planned office building of 1907.

Enfield Lock railway station is close by.