IN Brief:
- Balfour Beatty Group Limited is due to stand trial at Reading Crown Court on 22 May 2028.
- The case follows the death of construction worker Stuart Cook during a piling exercise at AWE Aldermaston in July 2023.
- The prosecution centres on construction safety duties at a highly regulated nuclear site.
Balfour Beatty Group Limited is due to stand trial at Reading Crown Court in May 2028 following the death of a construction worker at AWE Aldermaston in Berkshire.
The case relates to the death of Stuart Cook, who sustained fatal injuries during a piling exercise at the nuclear site on 6 July 2023. The Office for Nuclear Regulation is bringing the prosecution following its investigation into the incident.
The trial is scheduled to begin on 22 May 2028 and is expected to last two weeks. Balfour Beatty has pleaded not guilty to charges under the Health and Safety at Work etc. Act 1974, including allegations relating to its duty to ensure health and safety in connection with construction work.
The regulator has previously stated that the incident was not linked to radiological hazards and that there was no risk to the public. The prosecution concerns construction safety duties and the management of risks arising from site activity.
The proceedings focus attention on the safety controls required for complex civil engineering work in highly regulated environments. Nuclear sites add layers of governance, but the core construction risks involved in piling, heavy plant movement, temporary works, exclusion zones, and supervision are familiar across major project delivery.
Large infrastructure and energy schemes often rely on multi-tier delivery teams. Clear allocation of responsibility is central to that structure, particularly where specialist subcontractors, site operators, principal contractors, and regulators are all involved in the same work environment.
Fatal construction incidents can lead to long legal timetables. Investigations, charging decisions, pre-trial hearings, and evidence preparation can run for years, leaving families, workers, project teams, and clients with prolonged uncertainty.
The case also sits within wider scrutiny of high-risk construction operations. Piling, lifting, excavation, confined work, and plant interfaces remain areas where planning, competence, supervision, and site discipline have to align throughout the programme. A method statement is only effective when it is understood, monitored, and followed under live site conditions.
The allegations against Balfour Beatty remain contested and will be tested in court. The scheduled trial will examine the circumstances of the incident, the safety duties in place, and the control measures used during the piling exercise at Aldermaston.



