Goofs

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.

One of the daily papers announcing the heist is dated August 5, 1950. However, the next paper to be shown is dated September, 1950. The final paper to be shown has an article that says the heist happened the previous evening and is dated April of 1951.

The bicycle changes. When Sid James rides past the bullion van, a close-up shows Sid sitting on a chrome steel bicycle with rod brakes and a rear rack, but when it cuts to him riding past the van, it's a totally different bicycle, no rack, cable brakes etc.

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.

When Shorty is shown practicing his drawing, the picture changes between the distant shot and the close shot.

Whatever the Eiffel Tower paperweights are made of it is not gold or lead, because a paperweight of that size cast in those metals would be too heavy to handle with the ease that they are handled in the film. (For example, Holland places one lightly on the palm of his hand without flinching a muscle.)

(at around 1 h 8 mins) There are no burns when Pendlebury grabs the tower from the acid tray and splashes acid all over the place.

Concentrated nitric acid doesn't burn skin instantly. At most, a slight burning or itching would be noticed after a few minutes of contact. It will, however, turn skin yellow a few hours after contact.

When Holland is being shown around Pendlebury's foundry the crucible is glowing white hot, but the lead used to make the diecast models melts at a far lower temperature. Unlike iron, lead does not glow when molten.

The electric light in the back of the bullion van is unusually bright for a stationary vehicle with the engine switched off.

The actor in the foreign currency booth also appears in the police line up. He isn't listed in the cast.

When Holland and Pendlebury ascend the stairs drunk, Pendlebury loudly recites a piece of prose, but his lips are obviously saying something completely different.

Stanley Holloway's voice in the gold-melting scene sounds as if it had been dubbed by another actor, and his lip movements in that scene don't quite match the sound of his voice.

When the two police cars crash on Junction Road, near the end of the film, a crew member is reflected in the side of the car in the close shot.

The bullion van seems to move in a circular direction after leaving the Bank of England. It next appears to be driving along the Embankment before it finally ends up parked facing east in Queen Victoria Street in the direction of the city not far from where it came.

The police car in pursuit of Holland and Pendlebury is informed that they are heading west on Portobello Road, when the road in question actually only runs north/south.

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.