The booking out sheet at the home of the aircraft has two clear entries , one for captain and another for pax. This would have been available to the AAIB .
As an aside , with regards to the "wink" to put the pilots at ease , Hogwash ! I have spent a lot of time flying at Bpool and the attitude of some of the controllers towards GA is at times despicable . Flippant sarcastic comments are more of the norm than a rarety . If you wish to experience a somewhat megolomaniacal attitude and at times downright rude service fly into blackpool .