These are the issues:
That’s definitely not a British Airways frequent flyer number on his boarding pass. In fact, presumably the “NW” at the beginning designates that it’s a Northwest number. But Worldperks has been folded into Delta Skymiles and doesn’t exist anymore, and the BA system isn’t going to take and print a Northwest number on their boarding pass in any case.
And there isn’t any British Airways aircraft in which row 7 is a first class seat!