A prolific paedophile has been found guilty of historical allegations of indecent assault against a seven-year-old girl.

John Hayford, 84, who lived in Stanmore at the time of the offence more than 20 years ago, was charged with indecent assault against the girl, who cannot be named for legal reasons, after the jury heard evidence from the victim - who spoke from behind a curtain - about how he performed oral sex on her while she was sleeping.

Hayford denied the historical allegations, which also included a charge of attempted rape and indecent assault on another woman, which he was found not guilty of by a jury at Harrow Crown Court today.

The man provided no evidence, but in police interviews claimed there was a 'conspiracy' against him.

The conviction comes only months after Hayford was found guilty of sexually assaulting a girl aged nine in a supermarket in The Broadway, Stanmore, in 2012.

Hayford’s daughter saw a television appeal on BBC's Crimewatch, which used footage of him in the store, and got in touch with her father to persuade him to hand himself in to police.

The elderly man now suffers from dementia and Alzheimer's, and did not speak during today's hearing.

Upon being found guilty, Judge Alan Greenwood, addressing Haywood, said: "You have been convicted of a very serious offence but because of your medical condition and of your age, sentencing will be a complicated process."

The verdict comes after a 14 year investigation from officers.

Hayford will be sentenced on January 16.