Eve is driving a Triumph TR3A in all of the exterior shots during the opening theft sequence. When Jimmy hands her the tube with the rolled up painting, the closeup shot of Eve is across the hood of a different car, now an MGA. The following shots also show the dash of an MGA and then she drives off in the far too quiet TR3A again. The closeups were likely done in studio using the MGA. These are similar cars but not the same.
Victor, as part of his blackmail threat shows some infra red photos which are clearly not infra red.
Right at the start the 'master criminal' says that it takes 32 minutes to the airport and he'll leave at 10 27 in order to get to the airport at 11.00 exactly. For someone who calculates distance and departure times to the minute, he can't do his maths very well.