While the RAF was the type's most high-profile customer, further Southamptons were sold to a number of other countries. Eight new aircraft were sold to Argentina, with Turkey purchasing six aircraft and Australia buying two ex-RAF Mk 1 aircraft. Japan also purchased a single aircraft which was later converted into an 18-passenger cabin airliner. The United States Navy also requested a quote, but no order never materialised. One RAF aircraft was loaned to Imperial Airways, with British Civil Registration "G-AASH", for three months from December 1929 to replace a crashed Short Calcutta on the airmail run between Genoa and Alexandria.