More comprehensive IMDB List: https://www.imdb.com/list/ls089219989/
NC17 | 18+ | R | A | MA [in English] + Independent Movies
D: Suggestive Dialog
E: Erotica
FV: Fantasy Violence (used only for the TV-Y7 level)
L: Coarse or crude Language
MA: Mature Audience
S: Sexual Situations
V: Violence
List included two Irish-British co-productions and a short Irish film.
List included some American-British co-productions filmed in U.K. with a British (or partially British) cast.
Sexflix
by JJVALIANT