Slough (pronounced ) is a town and unitary authority (Borough of Slough) in England. In the 2001 census the population was 119,070 (est. 122,000 in 2006). It is one of the most ethnically diverse towns in the UK, situated some 22 miles (35 km) west of central London and 20 miles (32 km) east of Reading.
It is home to the Slough Trading Estate, the United Kingdom's first such estate, the largest in single ownership, and one of the largest in Europe overall. This, coupled with extensive transport links, makes it one of the most important business centres in the south east of England. It is also home to part of Thames Valley University.
Slough is located at grid reference SU978797. The town is situated just to the west of Greater London. Proximate towns include Windsor to the south, Maidenhead to the west, Uxbridge to the northeast and Bracknell to the southwest.