I believe only a few knew the real truth, the rest went on rumours and speculation. Nothing was ever confirmed until later on. Plus even the ones who did find out the truth either made themselves scare or they left it out of fear because violent homosexuals can do damage also lol
All the gang knew the truth, their rivals the the Richardsons would refer to the Krays as poofters, British slang for fa***ts.
Ronnie was fcking a member of the House of Lords at one point. He also had a penchant for young boys like his bro Reggie.
The late Tony Lambrianou one of the boys who went down with the Krays in 69 told a story of how he once walked in on Reggie Kray fcking an underage boy. Kray told him to keep his mouth shut on pain of death.