Jones entry on the Internet Movie Database seems to be incomplete. It doesn't list the only post 1999 role I can remember seeing him in, which was in an episode of the late '70s British cop/action series The Professionals. In "Look After Annie" he plays the assistant of an antiracism crusader who just happens to be an old flame of CI5 boss George Cowley(the late Gordon Jackson). We eventually learn he's trying to get her killed so as to make her a martyr to their cause. Oddly enough Jones would appear again on the series in the episode "The Madness of Mickey Hamilton," yet I have no recollection of him.

He was in the Star Trek episode Redemption part 2, in a role that was little more than an extra. He was the tactical officer, I think, on the USS Sutherland.

It's funny to think of him doing the voice part of Blackavar in Watership Down.