For the period April 1950 until November 1952 Eagle Aviation's main operating base was at Luton Airport. During this period they were operating Avro Yorks, a few Dakotas and the one remaining Halifax. Initially the big drawback with Luton (I'm not talking about removing York Wing Tips in order to hangar them there) was the lack of Customs. All overseas movements outbound and inbound from/to Luton had to clear Customs at Bovingdon.
Luton News August 3rd 1950. BNA
Limited Customs Facilities became available at Luton on a trial basis in May 1951. So it was no longer a matter of the aeroplane calling at Bovingdon for clearance - rather that a Customs Officer would motor over from Bovingdon to Luton to do the business..........
The Pictorial May 8th 1951. BNA