Not sure if I'd say they were underrated, but not well known on your side of the water:

Sexy Beast
Gangster No. 1
The Long Good Friday
The Krays
(I don't like it, but a lot of others do)

Mick


...dot com bold typeface rhetoric.
You go clickety click and get your head split.
'The hell you look like on a message board
Discussing whether or not the Brother is hardcore?