TRAINS: GWR trains shown to have cracks have been allowed back on the network GREAT Western Railway (GWR) trains, that were taken out of service after cracks were found, have gone back into use after tests found there were no safety risks. Dozens of the high-speed Hitachi Class 800 trains trains, used by GWR and London North Eastern Railway, were taken out of service causing major delays in areas such as the North East and South West. GWR also took the trains out of use on the route between Hereford and London Paddington, with passengers using a revised timetable or alternatives such as West Midlands Railway services between Birmingham New Street and Worcester.