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.
The Class 143s were transferred from St Philip's Marsh to Exeter in December 2008, but three units remained in the Bristol area daily for several years, operating on services along the Severn Beach Line and the Bristol to Taunton Line, with alternating trips back to Exeter.