Originally Posted by
Genius1
If you are flying into LHR in First, you could book a cheap same-day domestic flight from T5, and then would be able to access the Concorde Room before your domestic flight, if you really want to sample the Concorde Room.
I would argue that if it is to be your only time in the CCR, the relatively negligible cost of the domestic flight would be offset by the experience, especially if you allowed a good few hours to enjoy the CCR.
Wouldn't the system let alone the CCR guardians spot that your F BP is for a T3 flight and that the T3 and T5 flights are simultaneous or nearly so?