Horsham is a market town on the upper reaches of the River Arun in the centre of the Weald in Sussex, England. The town is south south-west of London, north-west of Brighton and north-east of the county town of Chichester. Nearby towns include Crawley to the north-east and Haywards Heath and Burgess Hill to the south-east. It is the administrative centre of the Horsham district.

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