Top picture, 3rd row down, 2 matching figures on the far right are from this pack:

Top picture, 5th row down, 3rd from the left is the Thompson in this pack:

Figure to his left is the kneeling Thompson from this pack:

Engineers in the second pic are these:

So whilst there's not many pictures on Grubby's website, it seems likely that these are all in fact Grubby miniatures. These are in their "Kelly's Heroes 20mm" range by the way, rather than the Britannia range. No, I don't know why either, but you're welcome all the same.
