Thanks Dolmot, had forgotten the FF figure.
The RP ones are perfect but I had looked through the RPE lists and nothing like that is in production as far as I can tell. Presumably not all the AD&D licensed models got rescued.
Top of my (limited) options list at the moment is the Grenadier Ratscum figures but I cannot find any size comparison on those. They look quite bulky for true 25mms.