Portsmouth line

The Portsmouth line is a secondary main line originally built by the London, Brighton and South Coast Railway and the London and South Western Railway between 1847 and 1868. It leaves the South London Line (Atlantic Lines) at Peckham Rye, with connections to the Victoria branch of the Brighton Main Line at Streatham, and continues via Sutton, Epsom and Dorking to join the Mid-Sussex Line at Horsham.

Portsmouth Line
Overview
StatusOperational
OwnerLBSCR/LSWR;
Southern Railway;
British Railways;
Network Rail
LocaleGreater London
Surrey
West Sussex
Termini
  • Peckham Rye
  • Horsham
Service
TypeHeavy rail
SystemNational Rail
Operator(s)
History
Commenced1847
Completed1868
Technical
Track gauge1,435 mm (4 ft 8+12 in) standard gauge
Electrification750 V DC third rail
Route map

Peckham Rye
Peckham Rye Junction
South London Line to Battersea Park
East Dulwich
North Dulwich
Dulwich College viaduct
Knights Hill Tunnel
Tulse Hill Junction
Tulse Hill
West Norwood spur
Leigham spur
Leigham Tunnel
Streatham Tunnel
Streatham
Streatham Junction
Streatham South Junction
Mitcham Eastfields
(opened 2008)
(closed 1997)
Mitcham Junction
(closed 1997)
Hackbridge
Carshalton
Wallington Line to West Croydon
Sutton
Cheam
Ewell East
Epsom Town (LBSCR)
(closed 1929)
Epsom Line to Raynes Park
Epsom
Ashtead
Leatherhead (LSWR)
(closed 1927)
Leatherhead
Bookham Branch to Effingham Junction
Mickleham tunnel
Box Hill & Westhumble
North Downs Line to Shalford Junction
Dorking
Dorking Deepdene
North Downs Line to Redhill
Dorking Junction
Betchworth tunnel
Holmwood
Ockley
Warnham
Mid-Sussex Line to Three Bridges
Horsham
Mid-Sussex Line to Arundel Junction

As of 2022, the line is predominantly a commuter line and there are no scheduled services running along the entire route. The current service pattern can be divided into three sections. The first of these runs from Peckham Rye to Streatham (Southern), with trains then switching on to the Brighton Main Line towards Selhurst and Caterham; the second is the Streatham to Sutton section (Thameslink), part of the Sutton Loop Line, and the third runs from Sutton to Horsham (Southern), with trains originating from London Victoria and joining the Portsmouth line south of Streatham.

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