At the part where Helen Cutter is being chased by the Dinosaur outside Asda the man sweeping the floor moves past a chip and pin machine. But if this is really 8 years in the past then they should not have been invented yet.

This wasn't a slip up we still had cash machines 8 years ago that you had to put a pin number in to get your money out, just because cards now have chips doesnt make this bit wrong