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.

Victoria station, also known as London Victoria, is a central London railway terminus and connected London Underground station in Victoria, in the City of Westminster, managed by Network Rail. Named after the nearby Victoria Street, the main line station is a terminus of the Brighton Main Line to Gatwick Airport and Brighton and the Chatham Main Line to Ramsgate and Dover via Chatham. From the main lines, trains can connect to the Catford Loop Line, the Dartford Loop Line, and the Oxted line to East Grinstead and Uckfield. Southern operates most commuter and regional services to south London, Sussex and parts of east Surrey, while Southeastern operates trains to south-east London and Kent, alongside limited services operated by Thameslink. Gatwick Express trains run direct to Gatwick. The Underground station is on the Circle and District lines between Sloane Square and St James's Park stations, and on the Victoria line between Pimlico and Green Park stations. The area around the station is an important interchange for other forms of transport: a local bus station is in the forecourt and Victoria Coach Station is nearby.