From wikipedia, for interest:
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Ann Stephens (born 21 May 1931) was a British actress, popular in the 1950s. She was born in London. In July 1941 she recorded several songs including a setting of one of AA Milne's verses about Christopher Robin: "Changing Guard at Buckingham Palace" which often featured on the BBC Light Programme's Children's Favourites.
[edit]Selected filmography

Dear Octopus (1943)
They Were Sisters (1945)
The Upturned Glass (1947)
No Room at the Inn (1948)
The Franchise Affair (1951)
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This doesn't mention the Teddy Bears' Picnic record, which I well recall from late 40s. Remember also seeing her in film The Franchise Affair, from a novel by Josephine Tey [AKA playwright Gordon Daviot]: she gave a fine performance as the perjuring & vindictive tormentor of two innocent women, strangers she claimed had kidnapped and abused her just for a laugh. Good movie, I recall.

But what happened to her after that, I wonder? Her career seems to have come to a fullstop there. Anyone know?

~Michael~