Charlie Drake was a British comedian, actor, writer and singer who appeared in several TV show incarnations in Great Britain in the late 1950's and early 1960's. Standing at only 5'1" tall, his famed catchphrase was "Hello my darlings!" as he was typically about eye-level with the bosom of a busty co-star. He had a show called Charlie Drake In... that ran from 1958 to 1960.
IMDB has added a credit to Jocelyn's filmography indicating that she appeared in an episode of this show, which was called Grandad Was a Wrestler. It aired on November 25, 1958.
As far as I can tell, this show has never been released or re-broadcast, so my presumption is that it is likely a Jocelyn appearance that we will never get to view. I have never seen any pictures from it either.
If anyone has any other information about Jocelyn's appearance in this show, I would love to hear about it.