Thanks for all the links and information chaps - I do have the Hasslefree 'Sadie' figure but she's mighty small being only 27mm from the bottom of her boots to the top of her head. I might go ahead with her or use a proxy from the Malifaux Ronin set which I unearthed from the lead mountain. Possibly the one at the top right with a suitable paint job?
The Malifaux minis seem to be the right size to fit in and the figure at the bottom is the one that I'll be using as the 'Jane' proxy (mainly due to the hat) and as to the figure at top left I'm not sure, maybe the character from "The Walking Dead", whose name escapes me at the moment. Any other suggestions would be most helpful.