I have 2 separate tickets for my travel from JFK - LHR - MAD. The first ticket for JFK-LHR is on American while the next for LHR-MAD is on BA. American will land in Terminal 3 at LHR while BA of course will fly from T5. From a UK govt. perspective, I have read all rules and regulations and I do qualify for a DATV exception since
a) I will not be going out of the airport,
b) have next flight from LHR within 24 hours,
c) have a valid US resident visa,
d) will be on a flight originating from US
and e) changing Terminals at LHR requires a bus transfer and does not requires you to cross border control.
Now my question is since I have 2 separate tickets and since the first ticket says final destination only till London and I donot have a UK visa, can the airline stop me for boarding the plane? even though I have a valid ticket (departing within 4 hours of landing at LHR) with a valid Schengen visa and given the fact that I do qualify for a visa DATV exemption?
Also, pls note that both are One World flights and AA will be able to check my bags all the way thru Madrid and will be even able to give me boarding passes for next flight since they can see other reservation due to OneWorld alliance. Still, can AA stop me for boarding? Pls respond at the earliest. Thanks a lot.