Isle of Man Air Services, a Rapide operator, was nationalised in February 1947 and rolled into BEA.
BEA maintained an extensive operation from Liverpool to IOM with DC3s, but gave up Manchester to the independents. In the summer 1949 timetable North-West Air Lines and Sivewright Airways both operated daily, building up to 5 North-West and three Sivewright on August Saturdays.
North-West, based in the IOM, started in 1949 with Rapides but moved on for the summer peak to a couple of DC3s, the Rapides still occasionally standing in. Things built up so well for them that BEA took the route back in March 1951 with their own DC3s, which led ultimately to the failure of North-West who were left with less worthwhile IOM routes and suffered from the perennial problem of low winter demand.
Sivewright was a prominent Manchester-based charter operator of the period who started flights to the IOM with Avro 19s in 1946, and used a medley of these and Ansons, Rapides, DC3s and an Aerovan over the next few years as they progressed to formal scheduled services. Like North-West they were hit by BEA taking back their plum routes from Manchester to IOM and Jersey, and folded in 1951.
By 1952 BEA had built up to 9 DC3s on August Saturdays, in addition to even more service from Liverpool. BEA didn't have enough aircraft to cater for this peak surge, and so at summer weekends would charter in from the many charter operators around at the time.