His reputation will rest on two very good, small films- the Wicker Man (obviously) and Breaker Morant- in which he plays a soldier who is left to carry the can for a war crime that is condoned from on high. If the dice had fallen right he could have been a major film star.
There's one more film to come- A Congregation of Ghosts- in which he plays a spectral vicar. It sounds promising.