It's certainly a strange old world out there; similarly, Prince Charles frequently uses PrivatAir despite the existance of a UK based/registered fully JAR-Ops 1 Compliant AOC holding Airbus operator (see
http://www.twinjet.co.uk). I can't think of a better way of keeping a bit of income flow washing around Blighty than that (it's V2500 powered so the engines are part-RR too.)