It's not all of the UK, you get asked in London, not in the countryside. Same in the Netherlands, you get asked in Amsterdam but not much outside.
I guess San Francisco also has much more oatmilk latte's than rural villages
I guess San Francisco also has much more oatmilk latte's than rural villages
(actually, you probably will oat milk on Canvey, it really is everywhere now)
So it isn't only London then?
(take “medium to large” with a grain of salt given that means population of 100k)
On the other hand, we were staying in larger cities, stopping in towns along major transit routes, and going to the "kind of coffee shops" where you would expect such a thing.