Before the introduction of DMUs, the First Class Compartments on local services in South Wales were normally kept locked except for the morning and evening peaks, when a considerable amount of 1st Class Season Ticket holders would be travelling. At other times it was necessary to get platform staff to unlock a compartment in order to join, or leave the train. This was a nuisance at stations where arrival platform faces were on the opposite side to boarding. Trying to attract platform staff at Pontypridd, to let you out, was always a nuisance. Did this happen in other parts of the country?