Emergency services responded to an unfolding incident at the Rolls-Royce facility in Derby on Thursday afternoon. Derbyshire Fire and Rescue Service reported that crews were dispatched to the site on Raynesway shortly after 16:00 GMT, joined at the scene by police and ambulance personnel.
Authorities advised residents in the nearby Alvaston area to keep their doors and windows closed as emergency teams addressed the situation. Local police also instructed reporters on site to remain inside their vehicles for safety as alarms sounded from within the building.
Road closures were implemented in the surrounding area, affecting Royal Scot Way, portions of Pride Park Way, Harrow Street, and sections of London Road.
The Raynesway facility is a key industrial site responsible for designing, manufacturing, and supporting the nuclear reactors and steam-raising plants that power the UK Royal Navy submarine fleet.
