In 2025, the Offender Database recorded that 40-year-old Robert Lock—of Avenue Road, Sutton—pleaded guilty to online child sex offences. Lock appeared at Croydon Magistrates’ Court where he admitted to two counts of attempted sexual communication with a child. It was reported that the investigation established Lock, who was employed as an estate manager for the Cirrus Primary Academy Trust, engaged in the illicit activity between June and August 2025.
The investigation established that Lock’s role involved overseeing the management of estates for several schools, including Avenue Primary Academy, Barrow Hedges Primary School, and Wallington Primary School. The prosecution reported that the Metropolitan Police arrested Lock just before the start of the autumn school term. Croydon Magistrates’ Court heard that while the trust expressed “complete shock” at the news, authorities stated there was no evidence to suggest a connection between the offences and his employment.
Judicial Findings and Investigative Detail
The court reported that the offences involved deliberate attempts to engage in sexual dialogue with minors in digital spaces. The investigation established that despite the Trust’s “highest levels of safeguarding and vetting,” Lock’s online activities remained undetected until the police intervention. The prosecution reported that Lock was remanded in custody immediately following his guilty plea, reflecting the serious nature of the breach of trust inherent in his professional proximity to children.
Magistrate-led proceedings at Croydon Magistrates’ Court concluded with Lock being convicted on both counts and remanded in custody to await sentencing. For his actions in Sutton and the “understandable distress” caused to parents across the academy trust, he was identified as a predatory digital offender. The court noted that the police provided specific assurances to the Trust to help manage the welfare and safety concerns of the hundreds of families affected by the news.
Status and Statutory Requirements
For the records reported in Sutton and Croydon, the status of Robert Lock as of April 10, 2026, was as follows:
- Custodial Status: SERVING (Sentenced following his 2025 conviction; currently incarcerated).
- Sex Offenders Register: Notification requirements are active for LIFE.
- SHPO Status: Subject to an INDEFINITE Sexual Harm Prevention Order (Including strict digital monitoring and a total ban on entering school premises or working in the education sector).
- DBS Status: Placed on the Barring List (Indefinite ban on working with children or vulnerable adults; dismissed from Cirrus Primary Academy Trust).
- Legal Status: CONVICTED (Attempted sexual communication with a child x2).
- Judicial Oversight: Sentenced following a hearing at Croydon Magistrates’ Court; investigated by the Metropolitan Police.
- Criminal Record: Primary school estate manager; Targeted children online over a three-month period; Arrested just before the start of the 2025 school year.
- Origin: Sutton, Greater London.
Monitoring and Public Protection
Lock is managed as a high-risk registered sex offender within the prison estate and will be subject to intensive monitoring upon any future release. Due to the nature of his conduct—specifically his “exploitation of digital platforms to target minors while employed in a sensitive sector”—his management is a priority for the Metropolitan Police Public Protection Unit. Authorities state that his background in school estate management identifies him as an individual who requires the most intensive tier of statutory oversight to ensure he never again gains access to educational environments.
As a registered sex offender for life, the 41-year-old’s details are permanently logged on the national police database. Authorities state that his lifelong barring from schools is a vital safeguard to restore public confidence in local educational vetting procedures. Any attempt to contact minors, any failure to disclose digital accounts, or any presence near the schools he previously managed in Sutton or Carshalton will result in immediate arrest to ensure the ongoing safety of the public from a man who demonstrated a “calculated and predatory intent” online.
QUESTION – Given that the offender passed all “highest level” vetting while actively committing online offences, do you believe that school employees in non-teaching roles should be subject to mandatory, unannounced forensic audits of their personal social media and messaging history?
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