It's not justified.
'-'
A Yorkshire Roast is wonderful!
Toad in the Hole is divine! [disclaimer: not an actual toad]
Spotted dick...eh, I'm not a fan of raisins in cakes.
Our sticky toffee pudding, though!
(*p*)
A lot of pubs and pub/restaurant chains here do British food.
Tbh, I'm not a fan of Italian restaurants.
I also hate French restaurants.
One thing to know, though, British culture - in terms of food - is an amalgamation of tons of different cultures.
Btw, have you never heard of afternoon tea?
Curries, fish and chips, pies, stews, roasts, sandwiches, bara brith, Welsh rarebit, scones, many cheeses, many jams, Jersey royal potatoes, pork, and many, many desserts.
We have a huge variety of foods native to us.
'-'
Yes, I have heard about it and many jokes about it. A considerable amount of British tankers were wounded during the battle of Normandy because the left their tanks for teatime and the Germans were quite eager to take some shots.
Since then until this day, all British military vehicles without exception have an integrated tea cooker.