To support its ambitious expansion plans, BCal acquired a number of additional, second-hand Boeing 707s from various sources through its aircraft trading and leasing subsidiaries during the early 1970s. These included a pair of 320C series aircraft procured on a long-term lease from Britannia Airways featuring a two-class, "widebody look" interior. Another three 707s received re-modelled "widebody" cabins. All five were used to inaugurate the airline's transatlantic scheduled routes to New York and Los Angeles where the established competition was operating widebodied aircraft, such as the Boeing 747 "jumbo jet". It was thought that the aircraft's widebody style interiors would leave passengers with the impression that BCal was operating widebodied aircraft when in fact it was not. During that time, BCal placed an order with the British Aircraft Corporation (BAC) for two new One-Eleven 500s and acquired additional second-hand examples. At the same time, the airline disposed of some of its 707s, VC10s and One-Eleven 200s. These included the original pair of 399C series 707 aircraft that had been delivered to Caledonian Airways direct from the manufacturer in 1967/68.