Look what
thetisonline found for me:
a young and cute Michael Keating! Just watch the first ad (or more if you're British and nostalgic). Awww, he's adorable! He looks as if he's just come in from a game. Which team does her support? Not Aston Villa anyway; wrong colours.
The ad was shown in 1977 on LWT, pre Blake's 7. I remember Michael saying he'd got his hair cut very short just before filming on B7 started and being worried they'd fire him. I suppose they cast him looking like this--and Goudy in The Sunmakers. I wish he'd kept it longer for the role of Vila. More, I dunno, roguish. :-)