Thoroughly disenchanted with what once was good Saturday night viewing, I scoured the listings and watched The Dambusters (again), a 2022 documentary on Diana Dors and Eye In The Sky - 2015 film I had not seen before but I was captivated by the story. On checking the full credits there was no direct reference to any advisory role (unless it came under general thanks).
The insight to the COBRA machinations was fascinating, to say the least and I wondered if the whole film was just down to fiction in that respect. Alan Rickman's last film and a superb performance by him.
I shall look regularly for decent films to watch on Saturdays in future ;)