several large businesses have been located in the region, with the biggest former employer being westinghouse, now owned by siemens, whose factory complex lies next to the railway station. the company undertakes railway signalling contracts for network rail, london underground as well as railway operators in other parts of the world, e.g. beijing subway, oslo public transport administration, smrt corporation, kowloon-canton railway corporation, mtr corporation and many others. parts of the westinghouse site are occupied by a range of companies. there are a number of other industrial sites around the town, bumpers farm being the largest.