Originally Posted by
SFOTurtle
If you have a long enough layover, you might still hit one of the *A lounges before switching terminals to BA for your connecting flight.
The only *A lounge at LHR is in T1, where I will be landing also. I do have a 6hr layover, so if they'll let me back to the departure side maybe I can get to the lounge? I don't think they'll let me through security though at T1 without a boarding card for a T1 flight.