The main pumping plant consists of four Woolf compound, rotative, beam pumping engines. These are arranged in mirror image pairs, in two separate engine houses, with a central boiler house (containing five Lancashire boilers with economisers) and chimney. The engines were built in 1885 by Gimson and Company of Leicester. All the engines are similar and the following description is limited to only one, but applicable to all. Currently C and D engines are able to run under steam, work is ongoing to restore the A and B engines.