Lee Brennan
Introduction
Lee Brennan is a former police constable with the Civil Nuclear Constabulary (CNC), Britain’s specialist police force for the armed protection of civil nuclear sites and nuclear materials. On 7 May 2026 a CNC misconduct panel found gross misconduct proven against him in a case arising from a drink-driving conviction, and ruled that he would have been dismissed had he not already resigned. Brennan was one of five officers to face CNC misconduct hearings between January and June 2026, every one of whom was found to have committed gross misconduct. His case entered the public record through the force’s published misconduct outcomes.
Background Information
The Civil Nuclear Constabulary is the armed police force that protects civil licensed nuclear sites in the United Kingdom and escorts nuclear material in transit. Its officers are constables with police powers, bound by the same Standards of Professional Behaviour that govern police forces across the country, covering honesty and integrity, discreditable conduct and orders and instructions. Brennan served as one of these constables. The force holds its misconduct hearings in public and publishes the full written decisions through its GOV.UK presence, which is how cases like this one enter the public record.
The Controversy or Incident That Led to Their Cancellation
Conviction and finding. The drink-driving offence is a criminal conviction, recorded on Brennan’s own guilty plea. The finding that he committed gross misconduct is separate: a regulatory conclusion reached by a CNC panel. This page records the conviction as convicted fact and attributes the gross-misconduct conclusions to the panel.
On 17 October 2025 Brennan reported for work having driven a vehicle there. A breath test administered at his workplace that day recorded that he was over the prescribed limit of alcohol in breath. The allegation that followed was that his conduct was incompatible with the role of a police officer, brought discredit on the CNC and undermined public confidence in it, in breach of the Standards of Professional Behaviour.
The criminal process moved quickly. On 24 November 2025, just over a month later, Brennan pleaded guilty to driving over the prescribed limit, contrary to section 5 of the Road Traffic Act 1988. He was disqualified from driving for 12 months — a period reducible by 13 weeks on completing a course by 24 June 2026 — and fined £120. The conviction was therefore a matter of formal court record before the disciplinary process had reached its own conclusion.
For a serving officer, the conviction was the beginning of the disciplinary question rather than the end of it. Police misconduct panels ask two things: whether the conduct breached the Standards of Professional Behaviour, and, if so, whether it was so serious that dismissal is justified. An over-limit drink-drive conviction sits close to the core of that assessment for a nuclear police officer. CNC constables are armed, protect licensed nuclear sites and escort nuclear material in transit, and hold powers that depend on public trust. A breath test administered at the workplace speaks directly to the question of fitness for duty: an officer who arrives at a nuclear-protected site over the limit, having driven there, fails it in a way that bears on discreditable conduct and the confidence the public is asked to place in armed policing.
By the time the matter reached a hearing on 7 May 2026, Brennan had already resigned from the force. Resignation does not close a police misconduct case: panels retain the ability to hear cases involving former officers, and the question becomes whether the officer would have been dismissed had they still been serving. A ruling on that basis is not a technicality. It is a formal, published conclusion that the officer committed gross misconduct and warranted the sack, recorded against them notwithstanding their departure. The panel found gross misconduct proven and ruled that Brennan would have been dismissed had he not already resigned.
Public Reaction and Consequences
Brennan’s case entered the public record through the CNC’s published misconduct outcomes, which include full written decisions of its hearings. The case attracted wider attention as part of a run of five CNC misconduct hearings held between January and June 2026. An analysis published by Misconduct999 on 19 August 2026 under the headline “Every officer hauled before nuclear police misconduct hearings was dismissed or found to have deserved the sack” recorded that all five had been found to have committed gross misconduct: two serving officers were dismissed without notice, while three former constables — Brennan among them — were ruled to have warranted dismissal had they not already resigned. The analysis listed drink-driving among the case types, alongside child sexual offences, sexualised comments towards a colleague, theft and dishonesty. Five hearings, five gross-misconduct findings and no officer cleared is the most striking public feature of the episode; the CNC has not suggested that the five cases were otherwise connected.
Current Status
Brennan is no longer a police officer, having resigned from the Civil Nuclear Constabulary before the 7 May 2026 hearing. The gross misconduct finding against him is a matter of published regulatory record, recorded in the form of a ruling that he would have been dismissed had he still been serving. His conviction also stands: he pleaded guilty to driving over the prescribed limit, was disqualified from driving for 12 months — reducible by 13 weeks on completing a course by 24 June 2026 — and was fined £120. The public record does not show any appeal against the panel’s determination.
Impact on Their Career/Life
The finding ended Brennan’s policing career. A gross misconduct ruling recorded against a former officer — on the basis that dismissal would have followed had he still been serving — is treated across policing as closing the door on any return to the service, and it remains on the published record alongside his conviction. The conviction itself carried immediate practical consequences: a 12-month driving disqualification, reducible only by completing a course, and a fine. He left a specialist armed force that removed five officers through its misconduct process in six months.