On one occasion, the court heard, an alleged victim was "spooked" by Mr Wadsworth standing nearby with a camera around his neck.

During the trial, it emerged that two groups of victims contacted police after a complainant realised two years ago that what had taken place in the 1990s "was not right and not appropriate".

The victim, who cannot be named, told jurors he met the Wadsworths in parkland and only discovered their names after recognising their voices on a radio show.

In videos of police interviews played to a jury, the man claimed he had up to 15 sexual encounters as a teenager with Mrs Wadsworth - around half of them before he turned 16.

On one occasion, the court heard, Tony Wadsworth joined in a "threesome" with the teenager at the couple's home after he turned 16.

One of the complainants told the trial Mrs Wadsworth "must have known" her victims were under-age because of their appearance.

The sixth witness at the trial estimated that he was about 11 when he and older boys saw the Wadsworths having sex against a tree.

The man, who also cannot be named, said he was either 12 or 13 when he and two other boys were indecently assaulted.

In a video interview played to the jury panel, the man said of the Wadsworths: "They went up a tree and had full sex.