Originally Posted by
cldrvr
The rates and procedures for aircraft over 5.7t haven't been published yet, so lets get back to the subject on hand once they have.
They have been published for all aircraft over 5.7t and the supplement for aircraft over 20t with less than 19 seats (perhaps the type of "business jet" that the OP has in mind) -
HM Revenue & Customs: Rates of Air Passenger Duty.
@JP27 yes, you are correct - but a departing passenger is not subject to APD if connecting in the UK.