 They were returned in November and December 2011 after second-hand Class 150/1 sets were received from London Midland.The Class 143s were transferred from St Philip's Marsh to Exeter in December 2008, but three of the units worked in the Bristol area each day for several years on services on the Severn Beach Line and the Bristol to Taunton Line, returning to Exeter every other day for servicing.In January 2018, it was announced that £40 million was being invested into a new train maintenance depot at Exeter TMD, which is to act as an expansion to the current depot at Exeter TMD.