I had a vague feeling I'd seen it somewhere but perhaps I dreamt it. It was in 1967 on BBC1 - I know that because I remember watching it on Sunday mornings and didn't have BBC2 at the time, so it must have been 405.
So perhaps not, then, unless it was originated on 625-lines and the master tape still exists somewhere.
It's a great shame that he wasn't allowed to follow his idea through to fruition and he must have been gutted when the Japanese later showed how well it worked.
Edit
Well, I'm right about the year but not the 405-lines because this source says
"THE ENGINEER IN WONDERLAND
BBC One London, 27 August 1967 11.30
First shown on BBC-2"
So perhaps not, then, unless it was originated on 625-lines and the master tape still exists somewhere.
It's a great shame that he wasn't allowed to follow his idea through to fruition and he must have been gutted when the Japanese later showed how well it worked.
Edit
Well, I'm right about the year but not the 405-lines because this source says
"THE ENGINEER IN WONDERLAND
BBC One London, 27 August 1967 11.30
First shown on BBC-2"