London ? A former butler to Queen Elizabeth II was sentenced Monday to at least six years in prison after admitting he molested three children, including one who accompanied him to a royal Christmas party.

One of Paul Kidd’s victims contacted police after reading a newspaper interview with the ex-butler on last year’s 10th anniversary of the death of Princess Diana. The victim, now in his 40s, said he had been indecently assaulted by Kidd at the butler’s home in the early 1980s.

Kidd pleaded guilty in October to nine counts of indecent assault and six counts of sexual activity with a child. He also pleaded guilty to causing or inciting a child to engage in sexual activity, 11 charges of making indecent images of a child and two counts of possessing indecent images of children.

At a hearing at Manchester Crown Court, in northern England, Judge Mushtaq Khokar said Kidd still poses a risk to young people.