गूफ़

When our hero runs out of fuel on his moped and throws it into the side of the road, notice the curb stones along the side of the road, these 'Beany Blocks' have regular drainage holes in them that were only introduced around 2000, certainly not even dreamed of in the 70's.

About an hour into the film, Alfie Allen orders a drink in the pub by saying "can I get a bottle please?".

"Can I get..." is an Americanism that has only crept into the UK some time in the last 10 years and definitely would never have been used in the 70s.