Burgess Hill in the context of Haywards Heath

Horsham (/ˈhɔːrʃəm/) is a market town on the upper reaches of the River Arun on the fringe of the Weald, in West Sussex, England. The town lies 31 miles (50 km) south-south-west of London, 18.5 miles (30 km) north-west of Brighton and 26 miles (42 km) 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.

Bolney is a village and civil parish in the Mid Sussex district of West Sussex, England. It lies 36 miles (58 km) south of London, 11 miles (18 km) north of Brighton, and 27 miles (43 km) east northeast of the county town of Chichester, near the junction of the A23 road with the A272 road. The parish has a land area of 1,479.41 hectares (3,655.7 acres). In the 2001 census there were 1209 people living in 455 households of whom 576 were economically active. At the 2011 Census the population had increased to 1,366. Nearby towns include Burgess Hill to the southeast and Haywards Heath to the east.

The majority of the village sits between the A23 to the east, and the A272 to the south and consists of a main north–south road called The Street and towards the top of the village by Top Street, Cherry Lane and Ryecroft cutting east/west. Outside of this area the village extends south of the A272 down Bolney Chapel Road and to the East of the A23 in Crossways. The Bolney crossroads of the A23 and A272 has always been an accident black spot, and even with the building of the A23 flyover the area still has a high level of accidents and incidents on its stretch of the A23.

Mid Sussex is a local government district in West Sussex, England. The largest town is Haywards Heath, where the council is based. The district also contains the towns of Burgess Hill and East Grinstead plus surrounding rural areas, including many villages. The district includes part of the South Downs National Park and part of the designated Area of Outstanding Natural Beauty of High Weald, including sections of Ashdown Forest. The district contains most headwaters of the River Ouse. Its largest body of water is Ardingly reservoir which is used by watersports clubs. At the 2021 census the district had a population of 152,949.

The neighbouring districts are Crawley, Horsham, Brighton and Hove, Lewes, Wealden and Tandridge.

The Brighton Main Line is a railway line in southern England linking London to Brighton. It starts at two termini in the capital, London Victoria and London Bridge, and the branches from each meet at East Croydon, from where the route continues southwards via Gatwick Airport to the coast. The line serves the suburbs of South London, as well as the towns of Redhill, Horley, Crawley, Haywards Heath and Burgess Hill.

The distance from the London termini to Brighton is around 50 mi (80 km) and the fastest end-to-end journey time is about an hour. A variety of passenger services runs on the line, including limited-stop airport expresses, semi-fast regional and outer-suburban trains, and shorter-distance commuter services. These are operated by Govia Thameslink Railway (Gatwick Express, Southern and Thameslink), Transport for London (London Overground) and Great Western Railway.