In 1948/49 BOAC did in fact use four DC-4's (C54A) that were owned by the original Skyways Ltd. based at Dunsfold. They flew services to the Middle East and the Persian oil fields on behalf of BOAC, as well as some War Office charters.
They were G-AJPL, 'PM, 'PN, & 'PO. that were obtained from KLM and the survivors sold to Air France. G-AJPL crashed at Castel Benito in February 1949on a War Office charter.
They seemed to have a fairly poor serviceability record probably due to the UK goverment restricting Dollar purchases and therefore making getting spare parts a nightmare.
Speedbird48.