A lot of trad jazz standards were well in evidence at the dawn of the folk clubs. but you'd go quite a long way nowadays before hearing St James infirmary. The suppression of Americana in English folk clubs, has also led to the suppression of this uniquely English or at any rate uniquely European perspective on jazz that was at one time feeding into our folk music.

When what were regarded in America as trad jazz people (like Eddie Condon) came to tour England in the 1950's - they were astonished to find young English people writing and performing songs in a style that harkened back to 1920 and King Oliver and even before.

Some of this is down to the fact that there were very few black people living in England in the 1940's and 50's. if you listen to George Melly's reminisences of the time, his views of black people are rather like Baudelaire's a hundred years earlier - they are exotic creatures and their music tells of a sexually liberated and hopefully depraved existence - not available in 1950's Britain. A view hard to sustain in a more integrated community.

Interesting question........