Rolls-Royce Submarines Gas Leak at Derby Site Prompts 300m Cordon and Road Closures

A gas leak at Rolls-Royce's Raynesway site in Derby followed a routine bottle replacement, prompting a fire service response and a 300m cordon, the company said. Yahoo reported that Derbyshire Fire and Rescue Service was called to the site at about 15:40 GMT on Thursday.

Inside the Raynesway Gas Leak Response

Monitoring alarms identified the leak after the bottle replacement, and monitoring was carried out on and off site before management of the incident was passed back to Rolls-Royce. A 300m (985ft) cordon was put in place and locals were asked to remain indoors with windows and doors shut, with the guidance lifted shortly before 22:00 GMT. Several roads were shut during the emergency response.

Rolls-Royce Submarines said the incident was "not a nuclear incident", and employees moved to a nearby building while it was resolved. A spokesperson said: "All measures put in place were a precaution whilst the incident was thoroughly investigated." The spokesperson added: "We apologise for the disruption caused for people in the area and we thank them for their patience and understanding whilst the incident was managed and concluded."

The Raynesway site designs, manufactures and supports nuclear reactors and nuclear steam-raising plants that power every submarine in the UK Royal Navy. The site is the subject of plans to create more factory space to meet growth in demand from the Royal Navy and as a result of the recent AUKUS announcement. In March 2023, it was confirmed that Rolls-Royce Submarines would provide all the nuclear reactor plants powering new attack submarines under the trilateral agreement between Australia, the UK and US. The increase in demand will see new manufacturing and office facilities built on recently acquired land around the existing site, creating 1,170 skilled roles across disciplines including manufacturing and engineering.

Rolls-Royce's Nuclear and Defence Expansion

According to akta.pro company records, Rolls-Royce was selected in June 2026 by Vattenfall's Videberg Kraft to deliver three small modular reactors of about 1.41 GW for Sweden's first new nuclear power plant in over 40 years, making Sweden the third European country to select Rolls-Royce SMR technology. The same records show Rolls-Royce received up to £599 million from the UK National Wealth Fund in May 2026 for the SMR project. Rolls-Royce was founded in 1906 and is headquartered in London, with Tufan Erginbilgic as chief executive officer.

Earlier Derby Emergency Response

On November 12, 2026, emergency services responded to a leak at a Rolls-Royce factory in Derby, with firefighters, police and ambulance personnel on scene, BBC reported. The leak was contained to the main production area, and residents in the Alvaston area were advised to keep windows and doors closed. On November 6, 2026, Rolls-Royce Submarines said it was partnering with INFINITY to develop new defence capabilities on a 200-acre park, a project estimated to create 17,500 skilled jobs, according to The future of trading.

What Comes Next at Raynesway

Rolls-Royce said it remains committed to keeping its site, the people of Derby and the environment safe and will continue to learn from incidents such as these. The company said new manufacturing and office facilities are planned on land surrounding the existing Raynesway site.