Cliff Lewthwaite, now aged 65, was living in Bromley during his late teens and early 20s when he subjected the child to horrific sexual abuse.
He would later go on to abuse two more children – for which he received an 18 year prison sentence in 2019.
Lewthwaite, who is being held in HMP Belmarsh, was said to be “looking forward” to September 2027 – earmarked as his release date as he would have served half of his sentence.
But at Woolwich Crown Court on Tuesday, October 21, he received an additional 10 year prison sentence after a jury found him guilty of 13 sexual assaults and the attempted rape of a child.
The court heard that Lewthwaite appeared to be a respectable and hard-working member of society, working as a butcher, milkman and pub manager throughout his life.
But Judge Philip Shorrock described how he had carried out a “campaign of serious sexual abuse” the girl.
The court heard that Lewthwaite now lives a “lonely existence”.
He is segregated from the other prisoners because of the nature of his crimes and has not had a visitor in seven years, the court heard.
Judge Shorrock decided that his latest prison sentence should begin after he had served his current term.
