By 1985, Air UK acquired additional Shorts 330/360s and Fokker F-27s. The latter included the first stretched 500 series F-27s featuring an increased seating capacity of 52 (as opposed to 44 for all shorter fuselage F-27 models). To further support its ongoing expansion, Air UK temporarily leased an F-28 1000 series as well as two BIA One Eleven 400s during that period. (All of these aircraft wore different, white-based colour schemes.) Reintroduction of jet equipment enabled Air UK to assume British Caledonian's regional operation between Glasgow, Newcastle and Amsterdam at the start of the 1985 summer timetable period, thereby further strengthening its position as the UK's leading regional feeder operator at Amsterdam Schiphol and as the airport's largest foreign scheduled carrier. The additional aircraft also permitted several year-round, domestic and international scheduled services from Stansted to be reinstated.