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Ex-firearms officer turned insurance investigator Paul Clay denied voyeurism and claimed he had filmed hours of bedroom footage by accident and was only trying to catch a thief.

But after a week-long trial a Leeds Crown Court jury convicted Clay of voyeurism and five counts of making indecent photographs of children.

Clay, 51, of Pudsey, was cleared of sex assault and, on the direction of the judge, possessing an indecent image of a child.

He was ordered to sign the Sex Offenders Register.

Judge Kerry Macgill refused a defence appeal for Clay to be bailed before he is sentenced in at least six weeks and remanded him in custody while psychiatric reports are prepared.

Judge Macgill told Clay: "You have been convicted by this jury of what in my view are very serious sexual offences. I take the view these matters are so serious a custodial sentence in my view is inevitable...I don't think it's appropriate to grant you bail."

Prosecutor Jonathan Devlin applied for a Sexual Offences Prevention Order.

The young couple alerted police in November 2006 after discovering the camera.

Police seized five three-hour-long video tapes feature scenes of the couple having sex at a house in Leeds interspersed with taped television programmes.

Clay claimed to have captured the sex by accident and when watching the recordings back he turned the tape off when he saw the couple kissing and indulging in "horseplay" on film.

Clay started working for West Yorkshire Police in 1986 and worked at Millgarth before joining the firearms unit in 1992.

In 1996 he had a breakdown after a relationship ended and threatened his ex-partner, but he denied a machete found by police was his

He pleaded guilty to affray at Leeds Crown Court and resigned from the police after he was handed a nine-month prison sentence, suspended for two years.

He went on to work as a self-employed insurance investigator and told the jury he uses surveillance techniques in his job.