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Tees Valley Line
A Northern Trains Class 158 arriving at Redcar Central Railway Station Platform One.
Overview
Status	Operational
Owner	Network Rail
Locale	County Durham North Yorkshire Tees Valley
Termini	Darlington Saltburn
Stations	18
Service
Type	Heavy rail
System	National Rail
Operators	Northern Trains TransPennine Express London North Eastern Railway Grand Central
Depot	Heaton Depot
Rolling stock	Class 156 Class 158 Class 185 Class 800
History
Opened	27 September 1825
Technical
Track length	38 miles (61 km)[1]
Track gauge	4 ft 8+1⁄2 in (1,435 mm) standard gauge
Operating speed	60 mph (97 km/h)
Route map (Click to expand)

The Tees Valley Line is a railway route in Northern England, following part of the original Stockton and Darlington Railway route of 1825.^[2] The line covers a distance of 38 miles (61 km), and connects Darlington with Saltburn via Middlesbrough, Redcar Central and other stations across the Tees Valley.

The section of line beyond Darlington through to Bishop Auckland is branded as the Bishop Line and is supported by the Bishop Line Community Rail Partnership.^[3] The section of the route between Darlington and Saltburn is branded as the Tees Valley Line and is supported by the Tees Valley Line Rail User Group.^[4] Beyond the Bishop line's western terminus at Bishop Auckland, the tracks continue for around 16 miles (26 km) to Stanhope along what is now the Weardale Heritage Railway.^[5]

The section of line between Bishop Auckland and Albert Hill Junction, Darlington (prior to joining the East Coast Main Line), as well as the section between Oak Tree Junction, Dinsdale (near Middleton St. George) and Eaglescliffe, follow the original route of the Stockton and Darlington Railway (S&DR), which dates back to 1825.^[2] The 1825 S&DR route is rejoined north of Eaglescliffe and runs as far as Bowesfield Junction, Stockton.

The S&DR line from Bowesfield to Watson's Wharf on the Tees near Middlesbrough opened in 1830, and this was extended to Redcar in 1846. The extension to Saltburn opened in 1861 and the line towards Brotton and Loftus opened in 1872. The line beyond Loftus (now the freight-only line to Boulby Mine) was part of the Whitby, Redcar & Middlesbrough Union Railway, opened in 1883; it closed on 5 May 1958.^[6]

In March 2015, a 0.62 miles (1 km) electrified siding was laid adjacent to the Tees Valley Line, just south of Heighington. This allows low-speed testing of the trains manufactured at the nearby Hitachi Rail plant at Newton Aycliffe, including TOPS classes 800, 801, 805, 807, 810 and 385.^[7][8]

Services on the Tees Valley Line are operated by three train operating companies:

• Northern Trains, with a half hourly service from Saltburn to Darlington, of which one train every hour extends to all stations on the Bishop Line through to Bishop Auckland. Additional services operate along the Tees Valley Line during the morning peak, with some journeys between Saltburn and Newcastle running along the East Coast Main Line, rather than the Durham Coast Line.^[9]
• TransPennine Express also operates along part of the Tees Valley Line, with hourly services from Redcar Central to Manchester Airport calling at Middlesbrough, Thornaby, Eaglescliffe, Yarm, Northallerton, York, Leeds, Manchester Victoria and Manchester Airport.^[10] Eaglescliffe was added as a call for the first time during the December 2024 timetable change. Three trains a day extend to/from Redcar Central to Saltburn.
• London North Eastern Railway operates a weekday return service from Middlesbrough to London King's Cross.^[11]

Predominantly, rolling stock on the Tees Valley Line consists of:

• Northern Trains operates Class 156 and Class 158 diesel multiple units (DMUs)
• TransPennine Express uses Class 185 DMUs
• London North Eastern Railway operates Class 800 bi-mode multiple units

Between 2019 and 2021, Class 156 and 158 units operating on the Tees Valley Line were refurbished, introducing free WiFi, power sockets, on-board passenger information displays and an interior refresh.^[12][13][14]

Class 185 units were refurbished as part of a £32 million investment, with the work being completed in 2018.^[15]

Class 142 Pacer DMUs formerly served the line on Northern services, until the early 2020s when they were withdrawn from passenger service.^[16]

v t e Tees Valley line
Weardale Railway Durham–Bishop Auckland Line Bishop Auckland South Durham & Lancashire Union Railway Clarence Railway to Ferryhill Stockton & Darlington Railway to Brussleton Lane Shildon Tunnel Shildon Locomotion Museum Shildon Sidings Newton Aycliffe Clarence Railway to Stillington Heighington Hitachi Newton Aycliffe  A1(M)  Darlington & Barnard Castle Railway North Road Skerne Bridge over River Skerne East Coast Main Line to Newcastle Darlington (Bank Top) East Coast Main Line to York Fighting Cocks Dinsdale Teesside Airport Allens West Yarm Depot Northallerton–Eaglescliffe line Eaglescliffe Castle Eden Railway to Wellfield Durham Coast Line to Hartlepool Stockton Surtees Rail Bridge over River Tees Thornaby Tees Marshalling Yard  A19  Tees Newport Bridge Newport Tees Riverside Intermodal Terminal Middlesbrough Esk Valley Line Cargo Fleet Cleveland Port Normanby Wharf Cleveland Railway Eston (2nd) South Bank Eston (1st) Eston mines branch Grangetown Teesside Steelworks (Lackenby) Lackenby Teesport Lazenby into Wilton International Redcar Bulk Terminal Warrenby Halt Redcar British Steel Teesside Steelworks (Redcar) Redcar (1st) Redcar Central Redcar East Longbeck Marske Saltburn West Junction Boulby line Saltburn

The combined Bishop/Tees Valley Line route serves the following stations:

Wikimedia Commons has media related to Tees Valley Line.

• GenMaps - Maps of Durham, Yorkshire 1885
• NPEMaps - Maps of area circa 1950
• Network Rail maps of Route 9 - North East Routes
• North Eastern Railway Tour 2000
• Communigate - Grangetown streets and buildings
• The Bishop Line
• Tees Valley Line Rail User Group