During the chase, the license plate on the armored truck is LKL238. The police officer correctly reports the license plate as LKL238. However, when the dispatcher repeats the license plate, he says LKL638.
After the raid we see the maroon (dark colored) bullion van being driven into an abandoned warehouse to be emptied (33mins 10 secs into the movie). In the next short shot of the van parking, the van has now become a light colored van. After that we see the dark colored van again.
Early in the film, when the gold is being poured into the mold to make bars, the position of the tongs holding the crucible of liquid gold is inconsistent. At first the tongs grab the crucible near the top, and then the film cuts to the men pouring the gold into the mold, at which time the tongs are closer to the bottom of the crucible. During the pour, the camera angle changes and the tongs are moved closer to the top of the crucible again.
Bicycle changes, the part where Sid James rides past the bullion van, a close up with Sid sat on a chrome steel bicycle with rod brakes, and a rear rack, when it cuts to him riding past the van, its a totally different cycle, no rack, cable brakes etc.
When the police scientists places the model Eiffel Tower in nitric acid he turns it over without suffering any acid burns to his hand. The same when Pendlebury grabs it from the acid tray splashing acid all over the place without any burns occurring.