I honestly don't know how he's avoided prosecution for this.
He's said in previous interviews that he was "Already a woman" when he met her (no she was a vulnerable 13 year old child you sick creep) and talks as though he was given a hard time by the press about it.
Clearly not hard enough as people are still falling over themselves to make documentaries about his life.
I was a child when they were together- not yet ten when the relationship ended and clearly remember the snide way she was referred to as a wild child by the British press, when in fact she was the victim of years of grooming and abuse.
www.dailymail.co.uk/femail/article-6995477/How-Rolling-Stone-Bill-Wyman-glosses-relationship-13-year-old-Mandy-Smith-new-biopic.html