During the opening credits the VW Type 2 Panel Van being driven by the would-be robbers changes from a mono-color to a two-tone.
When Johnny and Katie pull up in the car on the sand-dunes, the camera crew is reflected in the hubcap.
When Johnny and Blackie pull in to the woodland with the intention of burying Monty, the shadow of the camera is seen against the car.
Despite its Newcastle setting, not one character has a genuine "Geordie" (Newcastle/Tyneside) accent.