Im sure there was a Prem sat in 1K when i flew out to LAX in F. Didnt see any luggage tags on his carry on ect but to be honest i didnt go looking for them. The amount of butt kissing the CSD was giving him after landing made me think he was someone very important to BA. He was met at the door and whisked away to catch what i overheard was a very tight connection.
On the way back i had a Hollywood A-Lister also sat in 1K, upon landing at LHR she was met and whisked away by car while the rest of us F passengers had to slum it in a bus with everyone else. Now would she have been a Prem or would the fact she was met by a car be because she was a A-List Hollywood Movie Star.
Oddly enough despite her getting whisked away by car, i still caught up with her as we where going up the escalator in flight connections.