Network Rail is advising passengers to check before travelling later this month, as services will be disrupted as it replaces more than 10,000 wires in Gloucester signal box.
Trains between Gloucester and Chepstow returned to their usual schedule this morning (Saturday 17 May) after Network Rail completed five days of improvement and upgrade work.
Network Rail has completed upgrades over the bank holiday weekend, meaning that trains could run as normal between Gloucester and Bristol this morning.