https://www.bbc.co.uk/news/entertainment-arts-44494734

Grantham played Dennis "Dirty Den" Watts, on Eastenders. Den was one of the real sleazy bad boys in UK soaps.
Yes and his private life tallied with the on-screen character. http://www.dailymail.co.uk/news/article-5850325/How-Leslie-Grantham-jailed-murder-sacked-sex-scandal-left-homeless-divorce.html