The story
During 1860 and 1861 Craven began the removal of a large chalk hill on the western side of the main line, which had been dumped during the construction of the main line. The space created was used to accommodate a new much enlarged motive power depot in 1861, thereby permitting the closure of the existing facilities and their incorporation into the works proper. Nevertheless, by 1866 consideration was again being given to concentrating repairs at New Cross Gate railway station.
In the 1870s William Stroudley considered moving the works to the site at Horley once again, but instead moved the carriage repair shed and paint shops to new sites on the western side of the main line, and transferred the marine engineering work undertaken by the works to a new facility in Newhaven. This allowed for the further enlargement of the locomotive building and repair facilities, including the addition of an iron foundry in 1873, and a new carriage painting and cleaning shop in 1878, and a coppersmith's shop in 1881. This new construction solved the problem for a while, but did not address the underlying issue of the inadequate site so that by the end of the century the works was again suffering from serious difficulties affecting its efficient operation.
From Wikipedia’s article on Brighton railway works, shared under CC BY-SA 4.0.3
