The following text is from the original listed building designation:
HADLOW COURT LANE TQ 64 NW 6/59 Pump House approx 25m south - east of The Old Farmhouse, Style Place
GV II
Pump house. Circa 1886-88, the top was relined after damage in the Great Storm of 1987. Built of brick; an irregular mixture of red and ochre-yellow brick although the colours are used deliberately on the cornices and window heads. Tower-like structure, square in plan. There is a round-headed opening on the south west side which is boarded whilst the other 3 sides have small openings at ground level. At the top there is a corbelled brick cornice over a course of dentils. Above the brick weathers back to a narrow shaft with a water tank at the top. The pump worked a nearby artesian well.
According to the owner this was the first tube-bored artesian well in Kent. It is approximately 860 feet down to the Thames aquefer. It was dug to serve Simmons brewery based at Style Place, and is said to have been pumped to a glassworks. It remains as part of an unusually complete group of listed brewery buildings around Style Place Farmhouse (q.v.).
Listing NGR: TQ6469948957 (1)

A pump house at Style Place Brewery which was constructed circa 1886-88 and worked a nearby artesian well which is thought to be the first tube-bored artesian well in Kent. It is approximately 860 feet down to the Thames aquefer and was dug to serve the brewery.

The building is a tower-like structure, square on plan, with a round-headed opening on the southwest side, and small openings at ground level on the other three sides. It is built of brick in an irregular mixture of red and ochre-yellow brick, although the colours are used deliberately on the cornices and window heads.

Part of the structure was repaired following damage from the Great
Storm of 1987. (1)

<1> English Heritage, List of Buildings of Special Architectural or Historic Interest (Map). SKE16160.