Hello Chriss, and welcome to the board.
I am not a Whitefriars collector so can't help you identify this jug or the others you have posted, but there are plenty of others here on the board who are.
So be patient and as and when they have time to log in and see your postings, they will certainly tell you if it is.
It may be Scandinavian or even Polish, it does have lovely clean lines, and I can quite see why you would have bought it.