Matthew Gibson

Introduction

Matthew Desmond Thomas Gibson is a former UK dentist whose name was erased from the General Dental Council (GDC) register in December 2025 after a Professional Conduct Committee found his fitness to practise impaired by reason of a conviction. On 22 April 2024, having pleaded guilty, Gibson was convicted at Edinburgh Sheriff Court of attempting to communicate indecently with a child contrary to section 24(1) of the Sexual Offences (Scotland) Act 2009. The offence concerned sexual messages sent on a social media platform to someone he believed was a 12-year-old girl called Ruby, who was in fact an undercover police officer. The committee concluded that the conviction was “fundamentally incompatible with continued registration as a dentist”, directed erasure, and imposed an immediate suspension order. Gibson did not attend the hearing and was not represented.

Background Information

Gibson was a dentist registered with the GDC under number 283824; the court file records his full name as Matthew Desmond Thomas Gibson. The published record says little about his career: it names no employer, no practice location and no qualifications, and does not say when he joined the register. It records a regulatory blank slate — no previous fitness to practise history — and one significant mitigating fact: he referred the matter to the GDC himself.

The conduct dates from 9 January and 1 March 2023. Gibson pleaded guilty and was convicted on 22 April 2024, then reappeared before Edinburgh Sheriff Court on 22 May 2024, when he was sentenced to a community payback order with a supervision period of 12 months and an unpaid work requirement of 120 hours. His GDC hearing before the Professional Conduct Committee — chaired by lay member Gill Mullen, with dentist Caitriona Gerber Walsh and dental care professional Emma Haywood — was held remotely on 10 and 11 December 2025.

The Controversy or Incident That Led to Their Cancellation

Adjudicated vs. alleged. The conviction at the centre of this page is a court-record fact: Gibson pleaded guilty and was sentenced. The account of the offence below is taken from the extract conviction from Edinburgh Sheriff Court, which the committee treated as conclusive proof of both the conviction and the facts of the offence.

The extract conviction records that, on 9 January and 1 March 2023, Gibson “did intentionally and for the purposes of obtaining sexual gratification or of humiliating, distressing or alarming” a person whom he believed to be a child under 13 — a child he believed was called Ruby, aged 12 — but who was in fact “an adult who was a constable of the Police Service of Scotland, then in the execution of their duty and who was pretending to be said child”. He repeatedly sent messages of a sexual nature to her by means of a social media platform, thereby attempting to communicate indecently with a child.

Before the committee, the single head of charge — the conviction itself — was proved. Applying Rule 57(5) of the GDC’s Fitness to Practise Rules, the committee held that the certified extract conviction provided conclusive proof of the conviction and the facts of the offence, noting those facts had been found proven beyond reasonable doubt — a higher standard than its own — and that it could not go behind them.

The hearing went ahead without him. Notice sent on 27 October 2025 was received the following day, and his defence organisation, the MDDUS, told the GDC in emails of 31 July and 4 November 2025 that Gibson would neither attend nor be represented. The committee found service properly effected and concluded that Gibson had “voluntarily absented himself”, deciding it was fair and appropriate to proceed under Rule 54.

Public Reaction and Consequences

No public or media reaction to the case is recorded on the determination, so the consequences that matter are the committee’s. At stage two it found Gibson’s fitness to practise currently impaired on both public protection and public interest grounds. It described the offence as of the utmost seriousness, observed that he had not engaged meaningfully with the hearing and had shown no insight or remediation beyond his guilty plea and compliance with his sentence, and judged that “a repeat of Mr Gibson’s underlying conduct cannot be said to be highly unlikely”. Gibson, it concluded, “presents a real and significant risk to the public”.

Its aggravating findings were stark: his behaviour “was predatory and premeditated”, amounted to an abuse of a position of trust toward someone he took to be a vulnerable individual, and entailed a real risk of significant harm. Mitigation was limited — he had completed his sentence, had no fitness to practise history, pleaded guilty and had self-referred. Working up the sanctions ladder, the committee found no action or a reprimand wholly insufficient, conditions impossible to formulate for public protection, and suspension insufficient; erasure was the only appropriate and proportionate sanction.

Current Status

Gibson is erased from the GDC register. The determination is dated 11 December 2025, and his registration was suspended immediately — effective from the date notice of the decision is deemed served — so that he could not practise pending erasure. Unless he appealed, the erasure would be recorded in the register 28 days from deemed service; if he did appeal, the immediate suspension would remain in place until any appeal concluded. The interim suspension order previously in place was revoked, replaced by the immediate order. MedicWatch’s summary of the outcome records him as struck off the register.

Impact on Their Career/Life

The erasure ends Gibson’s career as a dentist in the United Kingdom. Restoration after erasure for a conviction of this kind is, in practical terms, a remote prospect: the committee found the offence fundamentally incompatible with continued registration and noted the absence of any insight or remediation beyond the guilty plea itself, so the record that follows him fixes the case as predatory and premeditated conduct, an abuse of a position of trust, and a real and significant risk to the public.

The criminal side has concluded: the community payback order was no longer running by the time of the GDC hearing, and Gibson was understood to have complied with it. The published record is otherwise silent about his life — no practice history, no personal circumstances — so the measurable consequences are the conviction itself and the loss of registration that followed from it.

Sources

• MedicWatch, “Matthew Desmond Thomas Gibson — Struck off the register,” December 11, 2025 — source
• Dental Professionals Hearings Service, “GIBSON, Matthew Desmond Thomas,” n.d. — source
• General Dental Council, “Public Determination — Professional Conduct Committee: GIBSON, Matthew Desmond Thomas,” December 2025 — source