Mr Bidgood produced/directed the play and autographed the back of the photo dating his signature 22 July 1964.

David Chapman played Colonel Pickering and has his foot on the step talking to Eliza Doolittle (played by Linda Fardell) with his hand to his head.
Julian Ives is the mustachioed top hatted figure to the left - Professor Higgins.
The other top hatted figure was Freddie played by David Memel.
Eric Davidson played the dustman and Jane Oakley was Mrs Higgins.
Photo with thanks to David Chapman
Amendment thanks to: