Gainsborough line
The Gainsborough line is the current marketing name of the Sudbury branch line, a railway branch line off the Great Eastern Main Line in the east of England, that links  in Essex with  in Suffolk. It is  in length and single-track throughout. The line's Engineer's Line Reference is SUD. Prior to the Beeching cuts initiated in the 1960s, the line, then known as the Stour Valley Railway, continued beyond Sudbury to  in Cambridgeshire. Today the line is part of the Network Rail Strategic Route 7, SRS 07.10, and is classified as a rural line. 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  near Cambridge with  in Essex, with 13 intermediate stations along the line. The section between Shelford and  was closed on 6 March 1967 following the Beeching cuts, leaving  and  as the only stops between the termini. In 2005 the line received around £3 million of investment, which saw around  of old jointed track replaced with new continuous welded rail. Further investment was made in 2006 to replace around  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 by the transport minister and is part of the Essex and South Suffolk Community Rail Partnership. 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 with frequency increasing slightly during peak hours. The last departure from Sudbury at the end of each day is extended to . There are plans to expand more services from Sudbury through to Colchester and  using new bi-mode trains. Notable sights

The line runs across the Chappel viaduct, which has 30 arches each with a  span, with a maximum height of , and was the longest viaduct on the Great Eastern Railway. The East Anglian Railway Museum is located alongside the station at . Infrastructure
The line is single track throughout, has a loading gauge of W6, and a maximum speed of . Unlike other branches in the area, such as the Braintree branch line and Mayflower line to , the Gainsborough line is not electrified. New  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 , and estimated number of passenger entries/exits in 2018–19:

Accidents and incidents 
On 12 July 1887 one person was killed at  when part of a runaway train collided with a crossing gate. On 27 January 2006 at least four passengers were slightly injured when a  train ran into the buffer stop at . The 6:05 pm service from  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". 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. References

External links
Complete history of the branch line from 1849 Bures web site

Rail transport in Essex
Rail transport in Suffolk
Community railway lines in England
Railway lines in the East of England
Standard gauge railways in England