I think I have four that I believe are from that factory, and they are in my 'unknown, need further research' cupboard!
The first I bought, about twelve years ago, was sold to me as 'Old English' by a dealer who knew that I collected Old English (somewhere Frodsham way, I recall...). I think that was just an excuse to sell it to me, and that there is no evidence that these are English. I lean towards a French origin, but they might be Belgian or even Bohemian. I'll try and post some images when I have caught up with a few other things.