This extraordinary film is on a short run till 20th February at BFI Southbank as part of the cinema's Derek Jarman season. Details here.
Time Out review:
Not exactly typical of the British independent cinema, this not only tackles an avowedly 'difficult' subject (the relationship between sex and power, and the destructive force of unrequited passion), but does so within two equally 'difficult' frameworks: that of exclusively male sexuality, and that of the Catholic legend of the martyred saint, set nearly 1,700 years ago. Writer/director Jarman sees Sebastian as a common Roman soldier, exiled to the back of beyond with a small platoon of bored colleagues, who gets selfishly absorbed in his own mysticism and then picked on by his emotionally crippled captain. It's filmed naturalistically, to the extent that the dialogue is in barracks-room Latin, and carries an extraordinary charge of conviction in the staging and acting; it falters only in the slightly awkward elements of parody and pastiche. One of a kind, it's compulsively interesting on many levels.
Here is the trailer.