When Jackie hangs on the helicopter which is similar to Roger Moore hangs on Zorin's airship.
During the sequence where violence erupts at the drug lab in Thailand, some scenes are re-creations from the attack on the terrorist camp in Predator.
Jumping a motorcycle from the ground to the top of a train is a direct reference to a stunt performed by Michelle Yeoh in Supercop
Uma Thurman's character The Bride says "I would jump on a speeding train with a motorcycle for you", which is clearly a reference to Michelle Yeoh's stunt in Police Story III where she does just this.
Scene with Nick Frost's character looking at the DVD.
Video case is shown ("Supercop").
The Blu-Ray is seen
A character mentions that the cops fund cop movies, starting with the Police Story films.
The Lone Ranger's jump with the horse on to the moving train is the same as Michelle Yeoh's stunt with the motorcycle.
Video case is shown ("Police Story 3"/"Supercop").
When Panther meets Chaibat in his mansion, Chaibat is playing Streets of Rage (Sega Genesis).
BBFC censorship discussed
Hanging from a ladder is the #7 pick.