Redhill (/ˈrɛdhɪl/) is a town in the borough of Reigate and Banstead within the county of Surrey, England. The town, which adjoins the town of Reigate to the west, is due south of Croydon in Greater London, and is part of the London commuter belt. The town is also the post town, entertainment and commercial area of three adjoining communities : Earlswood, Merstham and Whitebushes, as well as of two small rural villages to the east in the Tandridge District, Bletchingley and Nutfield.
The town is situated on the junction of the north–south A23 (London to Brighton) road, and the east–west A25 road which runs from Guildford through to Sevenoaks. It is also on the railway junction, served by Redhill railway station, of the Brighton Main Line, North-Downs line, and Redhill-Tonbridge line.