Surely Bus this is a level 1 finding. Manager's on a dispensation abusing the priviledge given to them. On BA's addmission all aircraft were returned to the hangar and work re certified, this alone means something went on. Also BA QA would have had to notify the CAA on two fronts, the non compliance of several (?) aircraft to the AMP and the fact of the illegal stamping which caused this non compliance.
Also cant tell me that the CAA bods are not aware of this through this site. Perhaps with all the nice weather they are unable to see through the sunnies.