Hope it's ok to add my 2 cents.
We have never encountered any rude British tourists since we've lived in Florida. As a matter of fact, we are always looking for an opportunity to chat with British tourists if we are visiting the parks and everyone we have met has been friendly.
When the Sanford airport was closed around the time of 9/11 we thought about going to the airport to see if we could put some British families up at our homes (my house or my parents house) but we weren't sure how the people stranded at the aiport would feel about coming home with "strangers" until things were sorted out with the airlines.
My father, my husband and I are going back to Sheffield again at the end of May and we are really looking forward to our trip. We're always treated nicely when we are in England and we enjoy all the people we meet. My cousin would love to book us a holiday weekend in Paris, but he says with the terrorist threats that he doesn't feel comfortable booking anything just yet (but I digress).
I think with all cultures there are nice people and rude people. I know plenty of racists/bigots who think everyone in the US should speak perfect English and that all foreigners should go back to their own country (it's attitudes like that that give us a bad names as a whole). Maybe it's a Pollyana way of thinking, but I'd love to think of the world as whole instead of a bunch of cultures and people divided. There are so many beautiful places I'd love to visit and I am naive in thinking I'd be welcomed anywhere I go.
So, if you are over visiting in Central Florida and a goofy family approaches you and asks where you are from and starts telling you about their family in Sheffield, run away quickly.

We'll talk your ears off about how much we love England.
P.S. The Easy Street Cafe in Lake Mary on 17/92 has some good food! The owners are Welsh and English and they serve bangers and mash, sticky toffee pudding, and two nights a week they have shepards pie. The rest of the menu is "American" and pretty good!

It's probably about 10-15 minutes from the Sanford airport.