It's a 1980 British film with Bob Hoskins in the lead where he is trying to set up a major deal with US gangsters. Unfortunately for him, his outfit inadvertently runs afoul of the IRA at the same time and they don't forgive and forget.
Hoskins gives a riveting performance. Unfortunately, like many British films, you have to struggle a bit to understand the dialog for about the first 15 minutes or so. The film also includes Pierce Brosnan in a very early small part as an Irish assassin.
Oh yeeeaahh....that one. Randomly grabbed that from a video store in the early 90's. Damn. I'm always a fan of gangster movies that don't glamorize the lifestyle. This one certainly didn't and as usual Bob Hoskins was great.