Civil Nuclear Constabulary

The Civil Nuclear Constabulary (CNC) is an armed specialist police force with a single, tightly-defined statutory mission: protecting civil nuclear licensed sites and the transit of nuclear material within the UK. Its statutory basis is the Energy Act 2004; it is accountable to the Civil Nuclear Police Authority (CNPA), which reports to the Department for Energy Security and Net Zero.

Every operational CNC officer is a fully trained Authorised Firearms Officer (AFO) — the CNC has the highest firearms-authority ratio of any UK police force, effectively 100%. The role is armed security policing of a specific national-infrastructure risk category: nuclear reactors (currently including sites operated by EDF Energy at Heysham, Hartlepool, Hinkley Point, Sizewell, Torness and Dungeness), fuel processing and storage sites (Sellafield being the most significant), and the transport of nuclear material (spent fuel, new fuel, waste) between sites via road, rail and sea.

Because the mission is site- and cargo-defined, CNC officers do not perform general community policing, PACE arrests, response to public disorder, or conventional criminal investigation. Their jurisdictional powers under the Energy Act allow them to act in relation to nuclear-security offences (which is a small statutory list) and to defend nuclear material against terrorist or hostile attack. Any conventional criminal matter that arises alongside CNC operations is handed to the local Home Office force.

Rank structure is Constable, Sergeant, Inspector, Chief Inspector, Superintendent, Chief Superintendent, Assistant Chief Constable, Deputy Chief Constable, Chief Constable — the same ladder as Home Office forces. Pay is set by the CNC-specific determinations negotiated between the CNC Police Federation and the CNC Chief Constable's office (with CNPA agreement). Pension arrangements are the Police Pension Scheme 2015, aligning with mainstream policing.

Recruitment is competitive — most CNC officers come from either military (particularly Royal Marines and infantry), armed Home Office policing (SO19, force firearms teams) or the Ministry of Defence Police. Direct-entry recruit training is possible but the fitness, firearms and vetting bar is high. Vetting is SC minimum, with some roles requiring DV.

For applicants: CNC suits officers who want an unambiguous armed-defensive mission with a clearly national-security purpose and who are comfortable with a highly-specialised, non-generalist career. It is not a route into general policing — but it is a genuinely distinctive UK-policing specialism.