A judge has today jailed a Sittingbourne window cleaner for 15 years after he admitted 14 sex offences against a young girl in "the most callous abuse of trust imaginable".

Nicholas Bryce, of William Street, also received an extended sentence of five years, with other shorter sentences to run concurrently. He must serve at least 10 years in prison.

The 39-year-old (pictured right) admitted 14 sex offences against the girl.

Canterbury Crown Court was told the offences included rape and also related to Bryce touching the girl sexually, forcing her to touch herself, to perform sex acts on him and to view extreme level 5 pornographic material.

Judge Simon James said Bryce had subjected the girl to a "catalogue of systematic sexual abuse" and that if he were to impose appropriate consecutive sentences they would run for "50 years or so".

Karen Holt, prosecuting, told the court Bryce had made "full admissions" about the offences and had said he had started because he was lonely with "just a bit of fun that began with tickling".

He had admitted being sexually attracted to children. He said that aged 14 he had sexually abused a younger girl.

In April 2011, he had been given a 12-month jail sentence - suspended for two years - for possessing extreme pornography, including images depicting children.

Nicholas Bryce was jailed at Canterbury Crown Court

A Sexual Offences Prevention Order had been imposed, restricting his contact with children. He had breached the order, a criminal offence, when he befriended teenage girls and was arrested in October 2012.

Paul Green, defending, said the only mitigation were Bryce's admissions to the police and in court.

Judge James said some credit was due for the abuser's frankness, acknowledging his remorse and the fact that Bryce recognised he had a problem. The sentence had to reflect his abuse of a "young, innocent and defenceless victim".

"You presently pose a significant risk to children," the judge said

DC Emily Hooper, from Kent Police, said: "Bryce put his victim through a sustained period of depraved sexual abuse, showing a complete lack of respect for another human being."