Hello Guest, of course you are right, Belgium. Thanks for your other information too: I have no objection to any musician earning a living, by the way! And Broonzy was good (well I think so) and therefore deserved success. I wish I had been able to see him! I got the information about his 'numerous' performances in British folk and blues clubs from Wikipedia. Of course, wiki isn't always right! Wiki cite a piece linked below which has an image of poster for a Broonzy concert run by London Jazz club:

https://allthirteenkeys.wordpress.com/2014/06/22/on-a-kind-of-vacation-reexamining-african-american-blues-musicians-visits-to-britain-1950-58/

Not sure what he is wearing in this pic, but it isn't a suit or tie!

best wishes