Peter Hale has forwarded me this
extract from
Cartoonland, a 1949 documentary about Anson Dyer and his studio, asking for help in identifying the artists shown in the film. The man in the first of the photos below is Harold Whitaker; if anyone recognises the rest, let me know.
Len Kirley, Laurie Price, John Garling, Tony Guy, Sid Griffiths, Bob Privett, Vic Bevis, Betty Smith and Mollie Zambra are all candidates.
Another curiosity regarding the documentary is its focus on a cartoon entitled
Ronnie Rabbit. Peter tells me that an earlier part of the documentary, not included in the extract, shows Dyer reading a book of the same title to his niece before deciding to adapt it into a cartoon.
Ronnie Rabbit by T. Payten Gunton and Frank Rogers, published in 1949 - possibly the inspiration for the animated character.
However, there does not appear to be any kind of record of a cartoon called
Ronnie Rabbit ever being released. It may be that the footage was commissioned specifically for the documentary and the entire scenario staged, but this itself raises questions - for one, the clip of animation is not shown in its final state, only as a pencil test followed by individual cels.