Around the 16 minute mark 2 of the characters are in a black mini driving through London & the rear projection shots show lots of traffic & vehicles along the side of the road. In the shots showing the car from the outside there is hardly any traffic at all.
After Brett and Danny escape through the window of the club, they can still hear the conversation via an air vent in the window. When they climb down from the window ledge, the air vent is no longer there.