If you Brits are so proud of your cooking and cuisine then how come I see.....
French restaurants, Italian restaurants, Indian Restaurants, Chinese restaurants.....but have I ever seen a "British restaurant" ? Ah, no.
There are a few, but we go out to have something that differs from home cooking. Not many people know how to make jugged hare, syllabub, or muggety pie nowadays.
One thing to realise is that English food is at its best when good local ingredients are cooked simply. My mouth waters at the thought of fried fresh pigs liver, or a truckle cheddar, or spoots, or a well hung pheasant, or a Egremont Russet, and I must get some more salt marsh lamb. Pity the poor Americans that haven't had some proper dried smoked back bacon nor bloater nor Arbroath smokie. And the best kippers are sent from Scotland.
Oh, I figured Brit cuisine was "whatever they knocked up together in the back of the pub" while you were drinking the main course...
As late as 1957 municipalities employed people to knock up their citizens.
Until the mid 60s pubs were for drinking, line US bars.
In the 60s and 70s adventurous pubs introduced bar food, usually limited to a ploughman's lunch. That invented concept contained bread, cheddar cheese, and a pickled onion. Some were very nice, others less so.
In the 80s they introduced home made cook chill meals (sic), and this century some have become gastropubs, I.e. quite reasonable medium grade restaurants. Supermarkets have responded by creating gastropub ready meals:)
It is all several orders of magnitude better than when I was a kid. Let's hope they survive.