As of December 2016 the stations and all trains serving them are operated by Greater Anglia. The typical service frequency is one train per hour in each direction, with a timetabled journey time between one terminus and the other of 19 minutes.
History
The Stour Valley Railway opened on 9 August 1865, linking Shelford near Cambridge with Marks Tey in Essex, with 13 intermediate stations along the line.
In 2005 the line received around £3 million of investment, which saw around 5 miles (8 km) of old jointed track replaced with new continuous welded rail. Further investment was made in 2006 to replace around 6 miles (10 km) of track, leaving just the Chappel viaduct and Lamarsh to Sudbury sections in need of modernisation. This work was completed in 2007.
In 2006 the line was designated as a community railway[3] by the transport minister and is part of the Essex and South Suffolk Community Rail Partnership.[4]
The current name of the line commemorates the painter Thomas Gainsborough, who was born in Sudbury; the previous name was the Lovejoy line, after the television series Lovejoy, which was filmed in the Sudbury area.
All passenger services on the line are currently operated by Greater Anglia, which runs an hourly service in each direction. The last departure from Sudbury at the end of each day is extended to Colchester.
Notable sight
The line runs across the Chappel viaduct, which has 30 arches each with a 35-foot (11 m) span, with a maximum height of 75 feet (23 m), and was the longest viaduct on the Great Eastern Railway.[5]
The line is single track throughout, has a loading gauge of W6, and a maximum speed of 50 miles per hour (80 km/h).[2]
Unlike other branches in the area, such as the Braintree branch line and Mayflower line to Harwich Town, the Gainsborough line is not electrified. New Class 755 bi-mode trains started operating on the line in January 2020.
Stations
The following table summarises the line's four stations, their distance measured from London Liverpool Street, and estimated number of passenger entries/exits in 2018–19:
On 12 July 1887 one person was killed at Bures when part of a runaway train collided with a crossing gate.[6]
On 27 January 2006 at least four passengers were slightly injured when a Class 156 train ran into the buffer stop at Sudbury. The 6:05 pm service from Marks Tey was travelling at a speed at the time of the collision of approximately six miles per hour. An investigation determined that the driver failed to apply the brakes in a "timely and appropriate manner".[7]
On 17 August 2010 the Little Cornard derailment occurred when the 5:31 pm service from Sudbury collided with a lorry that had entered a level crossing without permission. The train driver and four passengers were seriously injured in the accident.