Mike Leigh's Naked with David Thewlis from 1993. highly recommended if you are in mood for dark comedy/drama (and for some Manchester accent). The script was largely created by improvisation during 11 weeks of rehearsal before shooting. The script was only 25 pages long.
from imdb: Johnny flees Manchester for London, to avoid a beating from the family of a girl he has raped. There he finds an old girlfriend, and spends some time homeless, spending much of his time ranting at strangers, and meeting characters in plights very much like his own.
I found out about this movie through The Orb's track S.A.L.T. from Orblivion album who used sample from this movie (The Mark Of The Beast scene...amazing dialog)
found it on youtube in full and watched it again. big thanks to uploader.
https://www.youtube.com/watch?v=gMwzvAt84P8