Oh bummer
Knew his B7 appearance of course plus a coupe of Doctor Who stories (supposedly his over acting in Timelash was returning the favour for Colin Baker's appearance as Baban the Butcher in B7
Then he turned up in Law & Order UK as judge in a few episodes. Even if you didn't see the face, you just the knew the voice.
As Avon he gave us one of my favourite quotes
"That is the sort of natural stupidity that no amount of training could hope to match"
But then there was also
"I'm not stupid, I'm not exependable, I'm not going"
"I don't know about on Auron, but on Earth it's considered bad manners to take your friends with you when commit suicide"
"You can have wars between states, you can have wars between planets, but when you have war between the sexes, everyone loses"