Peterborough lie detector puts abuser behind bars

Dec 31, 2021

Peterborough lie detector puts abuser behind bars

Peterborough police recently arrested Peter Coster, 38, after a historical sex abuse case came to light. Coster was contracted to complete some work at a school a number of years ago.

How it all began

Coster met a pupil at the school who told him she was three years older than she was. He spent the next few weeks exchanging calls and messages with her.

The pair met in Peterborough before going back to Coster’s home at the time in the city. He then gave the young girl alcohol and had sex with her.

Afterwards the girl confessed her true age but. Despite the revelation Coster agreed to meet her again one week later. The pair engaged again in sexual activity.

The case is opened

The offences finally came to light in December 2019 when the woman reported what had happened to her and disclosed the historical sexual offences.

Coster, now of Tweed Close, Honiton, Devon, was arrested but in police interview answered “no comment” to all questions.

However, he was later charged with unlawful sexual intercourse with a girl under 13 and gross indecency with a girl under 16.


He admitted both counts at a previous hearing. Coster was sentenced at Peterborough Crown Court on Wednesday (22 December). He was handed three years in prison. He was also ordered to sign the Sex Offenders Register indefinitely.

DC Anoeska Price, who investigated, said: “I am pleased the victim in this case came forward and revealed the sexual abuse she had suffered all those years ago”

“Coster’s victim was under the age of 13 and therefore, at the time of the offences, legally unable to give consent.

“It is never too late to report a rape or sexual assault. Regardless of whether it happened recently or 20 years ago – we will take your report seriously and do what we can to seek justice.”

Lie detector agreement

If Coster is granted future release, he will have to undergo regular lie detector tests. The tests have been a recent policy put in place to protect the community and make sure offenders don’t repeat their offences.

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