Unless it is something different the one-stop airline security though is only going to apply to frequent travelers. I received the official invite to the program for Canada-UK travel but it had that specific condition on top of all the other rules the trusted traveller programs have.
Quote:
Originally Posted by United Kingdom Registered Traveller Program Invite
Visitor eligibility criteria have changed and you now may apply to join if you have made at least 4 journeys to the United Kingdom in the previous two years. Complete details of Registered Traveller eligibility and availability can be found online at www.gov.uk/registered-traveller.
|
Also, unless it is different that the US-Canada program you still go through the same customs entry points as other travellers, you just have special lines. The receiving country also receives advance notice you are on the flight and has access to specific personal information in advance of your arrival. Part of the registration has also cleared your background check (no criminal record, etc). As there is nothing special on the originating end the airlines can still fly out of any airport. The reason YWG has US preclearance is those flights then land at
domestic gates and don't go through additional screening on arrival.