I have also looked at this. It is noticeable how refined BBC2 was compared to today. Different times. Sigh.
On one of the dates in 1974 I came across "Ooh La La" which I have a vague memory of - it was a collection of farces, some Feydeau, headed up by Patrick Cargill and Amanda Barrie, and the cast list is a veritable who's who of British character acting.
I looked it up on on IMDB and if you scroll to the bottom of the cast list there is one Leonard Woodrow. Bittersweet indeed.
PS Totally off topic but I was once chatted up by Patrick Cargill in the bar of the Theatre Royal Nottingham.