Originally Posted by
MarcElMile
Hi Uclacolumbiaunc,
The D concourse is indeed split up in a Schengen and Non-Schengen section, gate D59 and higher are for Non-schengen flights. Depending on the aeroplane you arrive in you will either arrive here (on a 737) or arrive at the Embraer stand and be ferried by bus to the Non-Schengen area.
You will still have to go through security upon making a transfer for a non-schengen transfer.
It may be a bit of a walk from the D gates but - other than that - there should be nothing tricky about it.
Sorry, these comments are incorrect and misleading and other posters are correct.
Firstly, the non-Schengen D-gates are D59 and LOWER. As other posters said, there are two levels with Schengen flights on the upper level. You will have no access to the upper level unless you pass through the Schengen passport check. However, as the UK is non-Schengen you do not do this.
From Canada you will arrive in the non-Schengen part of the airport, most probably D- or E-gates, and go straight to the departure gate for London, no passport check and probably no security check. I flew YUL-AMS-EDI in December and I am almost certain that I did not have to go through security, but maybe my memory is failing me.