In 2018, the Offender Database recorded that 20-year-old Sion Richard Griffiths was sentenced to 17 years in prison for the rape and sexual abuse of a child. Griffiths—of Glas y Dorlan, Nebo, near Amlwch—was convicted following a trial at Caernarfon Crown Court. It was reported that Griffiths engaged in warped behaviour involving a fetish for infant-like items, which he used during the commission of his crimes against the minor.
The investigation established that the abuse came to light in May 2018 after the child told a friend what Griffiths had been doing. North Wales Police reported that during the examination of a mobile phone, photographs were found of Griffiths wearing a nappy, and he subsequently admitted to police that he had a fetish for such items. The prosecution reported that Griffiths had denied the charges of rape and engaging in sexual activity but was found guilty by a jury.
Judicial Findings and Investigative Detail
The court reported that Griffiths was joined in his offending by a co-accused, 27-year-old Ffion Glynwen Jones of Maes Salem, Amlwch. Caernarfon Crown Court heard that text messages from Jones were discovered in which she threatened to report Griffiths to the police, to which he replied, “Fine, ruin me.” The investigation established that despite these messages, Jones was also found guilty of engaging in sexual activity with the child and was sentenced to 10 years in prison.
Judge Huw Rees presided over the sentencing, describing the pair’s actions as serious sexual abuse. For his actions in Nebo and Amlwch, Griffiths received a 17-year custodial term, while Jones was close to tears as her 10-year sentence was announced. The judge noted that it was too soon to fully assess the long-term impact on the victim and ordered both defendants to remain on the Sex Offenders Register for life.
Status and Statutory Requirements
For the records reported in Wales, the status of Sion Richard Griffiths as of April 2, 2026, was as follows:
- Custodial Status: SERVING (17-year term; sentenced 2018).
- Sex Offenders Register: Notification requirements are active for life.
- SHPO Status: Indefinite Sexual Harm Prevention Order active for life.
- Co-Defendant Status: Ffion Glynwen Jones serving 10-year term.
- Judicial Oversight: Sentenced at Caernarfon Crown Court; investigated by North Wales Police.
- Criminal Record: Rape; Engaging in sexual activity with a child.
- Origin: Nebo and Amlwch, Anglesey, Gwynedd.
Monitoring and Public Protection
Griffiths is managed as a high-risk Category 1 dangerous predator within the national prison estate. Due to the nature of his conduct, which involved a calculated and deviant fetish used to facilitate child rape, his management is a maximum priority for the North Wales MAPPA (Multi-Agency Public Protection Arrangements) team. Authorities state that his lack of emotion during sentencing and the gravity of the 17-year term reflect the extreme risk he poses to the community.
As a registered sex offender for life, Griffiths’ details are permanently logged on the national police database. Authorities state that his indefinite SHPO includes strict prohibitions on his contact with minors and his use of digital devices to access fetish-related material that could facilitate further offending. Any future release on licence will be governed by the most rigorous supervision, and any breach of his notification rules in Anglesey will result in immediate arrest to ensure the ongoing safety of the public from his warped predatory patterns.
QUESTION – Given that the co-accused had sent messages threatening to report the abuser but was ultimately found to have participated in the crime, do you believe that “failure to report” child abuse should be a separate criminal offence with a mandatory minimum prison sentence?
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