I think the redhead issue is settled and that this is now Beryl. Thank you for the various suggestions. I was directed by an anonymous well-wisher to this image and was immediately convinced - add the Land Girl uniform and its a done deal.
I'm not sure if she's a good Christina H lookalike or if this is this a first-class example of what you can do with an hour to kill and a bootleg copy of Photoshop. But this is the picture I need, my picture wall is complete. Just what I needed.