South Western Railway (Train Operating Company) - South Western Railway Services - B

• The South West Main Line (SWML) runs between London (Waterloo station) and the town of Weymouth, the route passes through several large towns and cities, including Woking, Basingstoke, Winchester, Southampton, Bournemouth, Poole and Dorchester. South Western Railway operates trains along the entire length of the line. Almost all trains operated by the company start from or terminate at London Waterloo with the exception of a Winchester - Bournemouth / Poole stopping service, these include semi-fast services to/from Southampton and Poole, and express services to/from Weymouth. There are also trains to and from Portsmouth, these trains branch off the SWML at Eastleigh, then proceed via the Eastleigh to Fareham and West Coastway lines to Portsmouth Harbour station.
• The Portsmouth Direct Line (PDL) branches off the SWML at Woking and runs to Portsmouth via Guildford, Haslemere, Petersfield and Havant. South Western Railway operates all passenger trains on this route, these include fast and semi-fast services between London and Portsmouth, and semi-fast services as far as Haslemere.
• The West of England Main Line (WEML) is the only mainline route that is not fully electrified. It leaves the SWML at Basingstoke and runs to Exeter via Andover, Salisbury, Gillingham and Yeovil. South Western Railway is the only operator on the line, with most services running between London and either Salisbury or Exeter St Davids. Some peak-time services terminate at various other destinations on the line, including Gillingham and Andover. On Summer Saturdays, there is also a daily return service to Weymouth, which leaves the WEML at Yeovil Junction and continues via the Heart of Wessex Line.
• The Alton Line leaves the SWML at Brookwood (just after Woking) and runs to Alton via Aldershot and Farnham. It is the shortest of the four mainline routes and as such it is sometimes considered an outer suburban route instead (however for ticketing purposes, it is classed as a mainline route). Services usually run the full length of the line between London and Alton, though some services terminate at Farnham.

• The Hounslow Loop Line, which leaves the main line at Barnes, runs via Brentford and rejoins the line between Whitton and Feltham (with junctions in both directions). Most services on the branch run either between London and Weybridge (described below), or run in a loop from Waterloo to Waterloo via Brentford, Whitton and Richmond (these services run both clockwise and anticlockwise).
• The Kingston Loop Line, which branches off at Twickenham, runs via Kingston and joins the South West Main Line at New Malden. Most services on this line run in an anticlockwise loop, from Waterloo to Waterloo, via Putney, Strawberry Hill, Kingston and Wimbledon.
• There is also a branch line to Shepperton, however, this is only served by Putney trains at peak times.
• The Staines to Windsor Line, which branches off the main line at Staines-upon-Thames and runs to Windsor & Eton Riverside station. Most services run semi-fast between London and Windsor.
• The Chertsey Branch Line, which leaves the main line at Virginia Water and runs to Weybridge. Most services on the line run between London and Weybridge via the Hounslow Loop Line, a few services are extended beyond Weybridge, to and from Woking.
• The Ascot to Guildford Line, which is only served by through trains at peak times, these services run between London and Aldershot.

• The Mole Valley Line, which branches off the main line at Raynes Park and runs via Epsom to Leatherhead, where the branch line itself splits into two lines: one to Guildford and one to Horsham via Dorking. SWR runs regular services to both Guildford and Dorking, the section between Dorking and Horsham is operated by Southern.
• The Chessington Branch Line branches off the Mole Valley Line at Motspur Park and runs to Chessington.
• The Kingston Loop Line, which leaves the SWML at New Malden, runs via Kingston and joins the Waterloo to Reading line at Twickenham. Most services on this line run in a clockwise loop, from Waterloo to Waterloo, via Wimbledon, Kingston, Strawberry Hill and Putney.
• The Shepperton Branch Line, which branches off the Kingston Loop Line at Teddington. Most services on the branch line run between Waterloo and Shepperton via Wimbledon.
• The Hampton Court Branch Line, which leaves the main line at Surbiton and runs directly to Hampton Court.
• The New Guildford Line, which also branches off at Surbiton, running to Guildford via Claygate. The line joins the Guildford branch of the Mole Valley Line at Effingham Junction.

• The Ascot to Guildford Line, which runs between Ascot and Guildford via Aldershot. Most services on the line run only between Ascot and Guildford, with no extension in either direction, however, some peak-time services do run between London and Farnham via Ascot. The shuttle services are usually operated by Class 450 units.
• The western section of the West Coastway Line between Portsmouth and Southampton. Class 450 units are usually in operation on this route.
• The Eastleigh to Romsey Line between Romsey and Eastleigh. Services on the line are extended beyond Eastleigh to and from Salisbury via Southampton Central and Romsey, in effect calling at Romsey twice. These services are operated using Class 158 units.
• The Wessex Main Line between Salisbury and Southampton. Services are extended beyond Southampton via the Eastleigh to Romsey Line, as described above.
• The Lymington Branch Line between Brockenhurst and Lymington Pier runs every 30 minutes between these two stations. This is done entirely by Class 450 units on this line.
• The Island Line on the Isle of Wight, between Ryde Pier Head and Shanklin. These services are operated using former London Underground Class 484 converted from London Underground D78 stock.