He was also a regular newspaper columnist for the Mail on Sunday and other publications .
He had been a prolific self - publishing author , writing many short stories and novels in his later years , including a pornographic novel called Paris Sixty - Nine .
self - publishing author was also a regular self - publishing author   for the Mail on Sunday and other publications .
He had been a prolific self - publishing author , writing many short stories and novels in his later years , including a pornographic novel called Paris Sixty - Nine .