Originally Posted by
Kay_Baden
The OP doesn’t plan on entering arrivals area as they are flying out on Delta. Also not planning on scanning the BA BP at security.
Ah yes, noted. My bad
Originally Posted by
adrianlondon
I think you missed the part that they have a flight from T3, just not with BA.
Edit: damn, Kay is fast.
Yes, I should have read things properly, an oversight. Apologies to the OP, then a sound plan perhaps, but I think letting BA know you are not actually boarding would be courteous.