Lobby group Into The West has raised an issue in which trains from Belfast to Derry have been diverted to Portrush, leaving passengers 'stranded'.
During the summer months, passengers travelling on the Belfast to Derry line have arrived to find a scheduled Derry train diverted to Portrush.
Into The West expressed concern in the diversion of passengers seeking a route to Derry, particularly during the popular Foyle Maritime Festival, in which 150,000 people descended on to Derry's quay.