Why is England called the land of the crumpets?

Answer 1

A crumpet is a sweet, baked item, made with yeast which gives it the characteristic holes in the surface - the holes form as the dough rises. Although they are uniquely British (not just English!), I have never heard England described as "the land of the crumpets" even though I have lived here all of my life.
In English slang "crumpet" can mean an attractive lady, or even s*x! A man might ask his friend, "Did you get any crumpet last night?" meaning "did you have s*x?" This was quite common in the 1950's but is not much used nowadays.
I'd be very interested to hear where you've seen or heard England described this way.