Worting Junction is a railway junction on the former LSWR route south of Basingstoke where the line divides to go towards Salisbury or Southampton. When the line was first opened in 1854 Worting Junction was constructed as a flat junction. This required that down trains heading west and up trains from Southampton cross each other's paths. Initially this was not a great problem, however as traffic and speeds increased the junction became a bottleneck. To relieve this a flying junction was provided to the south, opening on 30 May 1897. This changed the arrangement so that up trains from Southampton line now crossed over the up and down Salisbury lines on Battledown Flyover 3¼ miles west of Basingstoke.
North of Worting Junction, stopping services to/from London Waterloo and CrossCountry services to/from the North of England via Reading use the outer pair of tracks, while express services to/from London Waterloo use the inner pair of tracks.