An engine shed was opened at Exeter by the
Bristol and Exeter Railway when it opened the line to here in 1844. A second facility was added a few years later by the
South Devon Railway and the two were combined under the
Great Western Railway (GWR) in 1876. The Bristol and Exeter had been worked by the GWR until 1849 but then purchased its own locomotives. Temporary workshops for these were built at Exeter but
a permanent facility at Bristol was opened in 1851. When
British Railways introduced new shed codes in 1950, Exeter-based locomotives carried an oval cast plate with the code '83C'. The last locomotives based here were sent elsewhere from 14 October 1963, but the shed area was kept as a fueling and stabling point for locomotives and
diesel multiple units (DMUs) working in the area. From 29 December 1976 it was recognised as a depot again, even though no locomotives were allocated there at the time, and given a new code 'EX'. New facilities were provided at the depot in 2011, including a new fueling point, and also jacks so that DMUs do not have to be sent empty to Bristol when they require lifting. It was announced in January 2018 that £40 million was being invested into a new train maintenance depot at Exeter to allow expansion to the existing depot and fleet.' Completion was delayed due to engineering problems and the
COVID-19 pandemic but was completed in 2021 having cost £56 million. ==Description==