It was a aerial photography flight with Scottish Government people on aircraft - think called "aerial work" , hire pilot, hire plane so you do not need AOC and do not need to do weight and balance. 4 people, full tanks, very overweight - didn't want to fly at the end of the runway - fortunately field at the other side. There is a good video of the whole event. Presume all brushed under carpet not sure CAA fully aware of all the circumstances!