Get Carter (1971)

A vicious London gangster, Jack Carter, travels to Newcastle for his brother's funeral. He begins to suspect that his brother's death was not an accident, and sets out to follow a complex trail of lies, deceit, cover-ups and backhanders through Newcastle's underworld, leading, he hopes, to the man who ordered his brother killed. Carter exhibits all the ruthlessness and unstoppability of the cyborg in The Terminator (1984), or Walker in Point Blank (1967), and he and the other characters in this movie are prone to sudden, brutal acts of violence.