Hi Alex. Thank you for posting reply. :-)
The turret number of my father's tank in the photo is 56 (he is the one sitting astride the gun. I have an original copy of the same photo). Alas, I am not sure if his tank carried the same number on DDay, or of the name. Obviously, I know it begins with a letter 'B'.
Thank you also for reference to film and book. Do you happen to know the name of the film.
I plan to visit Bovington Tank Museum and the IWM this autumn, and the Grand Bunker Museum next spring. I am also hoping to follow his path through Europe over the next 2/3 years.
Bracken