Scott Adkins, Ivan Kaye, Michael Higgs and Andrew French have all starred in the English BBC Soap _"Eastenders" (1985)_ at some point in their careers.
During the scene where Flint visits Polo's 'hardware guy', he uses a laser-guided gun to target him. The sound effect used for the mechanical movement is taken from _Robocop (1987)_.
When Vincent first enters his flat, he goes into his 'weapon room' and touches a crossbow to position it 'just so'. We see Vincent from behind the crossbow in close up, and the direction the crossbow is pointing is clear. However when the camera switches back, the crossbow is suddenly pointing in the opposite direction.