When Danny Dyer is wearing a crash helmet talking to a bound woman in a bath tub, her mouth is taped. However, a glimpse of her reflection in Dyer's visor shows her minus the tape with mouth exposed.
The motorcycle in the POV opening credits is completely different than the motorcycle shown being ridden moments later in the film.
Most of the shots of Danny Dyer riding his bike were filmed on Nine Elms Lane, in South London, with a few shots of surrounding Battersea. His first killing is in Angeltown, in Brixton.
Briefly you can see a small slice of the MI6 building as he rides over Vauxhall Bridge.