 There was considerable local opposition, and on 29 June 1966 the Minister of Transport, Barbara Castle, announced that the East Suffolk main line would be retained, although the Aldeburgh line could close.It was essential to reduce the cost of operating the line to the minimum, and this was to be done by singling the track, introducing conductor-guard operation (later named the "paytrain" system) and destaffing the stations.A revised train service was implemented on 11 November 1966, and conductor-guard operation from 10 March 1967.