RH 11

Crawley is a town and borough in West Sussex, England, situated south of London and north of Brighton and Hove.

Bewbush is a neighbourhood of Crawley in West Sussex with a population of around 9,000. It lies in the south‑west part of the town, bordered by Broadfield, Ifield, Kilnwood Vale and Gossops Green.

Broadfield is a residential neighbourhood in Crawley, West Sussex, featuring historic 19th‑century villas and proximity to local amenities.

Ifield is a former village that is now a suburban neighbourhood of Crawley in West Sussex. It lies to the west of the town, bordered by Ifield West, Horsham, Langley Green, West Green, Gossops Green and Bewbush, with the Arun Valley railway line marking its southern edge.

Lowfield Heath is a former village now part of Crawley, situated on the main London to Brighton road. It lies about 27 miles south of London and 2 miles north of Crawley, close to Gatwick Airport.

Pease Pottage is a village in West Sussex, situated on the southern edge of the Crawley built‑up area and part of the civil parish of Slaugham. It lies within the Mid Sussex District and carries the RH 11 postcode.