Originally Posted by
JSM8
Are you suggesting there is a bus that takes you from Airside T4 to Airside T4S? I have done this at Chicago and it avoids all the security and passport controls. That would be great if there is something like that at MAD
Yes.
All (except the IB and BA rotations to LHR that use big birds) flights from UK and Ireland arrive to the H gates in T4, which is the special non-Schengen area for that flights. Then the crew will direct you to the bus or someone will be waiting outside to take the transit passengers and you will be dumped into the departures area of the T4S. So no security, no passport control.