Well I’m not a local. I could guess there are some English whiskeys and beers and anything else? Which should be really good.
France doesn’t offer everything..
It's also more expensive. It's a little bit like how you don't see people in Savoie or Ain going to buy food in Switzerland, but the french supermarkets are packed with Swiss-plate expensive cars looking for a bargain.
I'm very fond of British food, and there are certainly some things that are better got in our supermarkets than in France. Less than the other way round, though, and without the cheap booze to offset the cost of the trip I can't see many French people coming to the UK for good Madeira, pies, or Marmite...
Can you tell a bit about your favorite British food?
Even though kidneys are cheap offal and smell like piss before they're prepared, they do make the pie filling richer and tastier: plain steak pies aren't anywhere near as good. Don't know why.
Many people in my age class went to Britain with school and have been hosted by locals during their stay (a few days) and I keep a vivid memory of how bad the food was. It's not irrational at all, British do eat terrible food.