I have not been to Gateshead, but I have been to London (Golders Green) and Ive been to Paris and Italy and I can tell you I am confused about Kashruth , I am not even sure about Chalov Yisroel in Europe. I do know how far Gateshead is from London (About 400 miles)
Since I am not sure about Kashruth (and Ill assume the girl did not either) I only buy from the jewish stores and I doubt she ever heard of Tesco or knew where it was (If you’ve never been somewhere, the store could be a block away and you wouldnt know it, and even if you did, What could you buy there) Kashruth in Europe is different. Until someone tells you what you can eat, you sort of have to wait. Its not about Chumas, this is actual Kashruth.
I think she flew into Ireland or something and then flew into Newcastle (Gateshead), She did take a train to get to London.