The camera angle of the raid keeps changing even though it is filmed from a single location on a cine camera by a witness.
When Tommy questions the loading-bay worker, we see him close the door of the black Capri. When he returns to the car a second later, the door is open
None of the witnesses was in position to film the inside of the truck when the guard was shot, yet the three agents watched that moment along with the other citizen footage afterwards.
The "Ship Hotel, Dorking", is actually The Compleat Angler - we see a sign in the background as the Newlyweds cross the carpark to go down to the river. They are shot in a larger river (The Thames at Marlow, adjacent to the Compleat Angler) whereas Dorking isn't on a river at all (the much smaller River Mole runs nearby)