Yes; Shelagh Appleby is Shelagh Murray.
I have a couple of slide scans which show the mole pattern around her navel as well as her eyebrows and general features. I've updated the database and I'll add a post to her thread.
Candy Miller is also a match. I have a slide scan matching the setting and hat shown on the second and third page of the Knave pictorial.
I don't recognize Andrea Primrose but I'll have a look through my unknown images (I have about 250).