Hi Thomas
I think that your beautiful glass could indeed be English. I have a Glass Circle publication entitled "From Palace to Parlour" a celebration of 19th century British glass, on pages 54 and 55 there are claret jugs shown with wheel engraved decoration with features similar to your glass. The particular element that caught my eye was the basket of fruit shown in your pictures which is very similar to the ones shown in the book. Also the overall style of the design is similar, the clarat jugs are described Stourbridge circa 1870-1880.
Best wishes
Hazel