John McGrath

A former British spy stumbles into in a plot to overthrow Communism with the help of a supercomputer. But who is working for whom? (imdb)

Michael Marler, a successful business man in London, is about to make his way to the top. The death of his father brings him - after 37 years - back to his hometown Liverpool, where he is confronted with his lost Irish roots. He finds out that his father died because of a fight with some anglo-saxon teddy boys. It becomes "a matter of honour" for him, to take his revenge without involving the British police. (imdb)

A national service NCO (David Warner) who comes face to face with an embittered Irish Gunner (Nicol Williamson) who is determined to humiliate him. (imdb)