A large waste water pumping station dating from 1875 and originally home to four James Watt & Co beam engines. Now (1991 anyway) has W H Allen 6 cylinder diesel engines and remains in use. The magnificent chimney ventilates the sewers.
This view was in the basement showing a three cylinder radial hydraulic engine that operated one of the large valves. I cannot read the plate but the Hydraulic Engineering Company of Chester is the most likely builder. They effectively used the design of Peter Brotherhood that was originally designed as a steam engine.