Budget cuts at Sellafield increases the risk of ‘devastating consequences’ at the world’s biggest plutonium stockpile, GMB Union has said. 

In a letter to chancellor Rachel Reeves ahead of the budget this week, the union highlights  ‘risks posed by reducing funding for such a complex and hazardous site’. 

The correspondence, signed by Sellafield worker Roger Denwood and GMB regional secretary Denise Walker, points out ‘Sellafield houses vast quantities of radioactive materials, including the ‘largest stockpile of plutonium in the world, at over 140 tonnes’. 

Funding cuts would reduce safety standards, increasing the likelihood of ‘serious incidents’ including ‘contamination of land and water resources’, the letter adds.

Mr Denwood, GMB Sellafield branch secretary, and Ms Walker wrote: “The health risks of radiation exposure, including cancer and other serious illnesses, are well-documented. 

“Any reduction in funding would inevitably result in fewer resources for maintenance, monitoring, and emergency preparedness—heightening the risk of a serious incident.  

“Funding cuts could also directly impact the highly skilled workforce at Sellafield, reducing the number of personnel available to carry out critical safety-related tasks. 

“These skills, honed over decades and passed on through generations, are irreplaceable.  

“Cutting funding now will have long-term consequences for future safety performance. The local community around Sellafield relies heavily on the facility for employment, and any reduction in funding could have significant economic impacts. 

“Many families depend on jobs at the site, and reductions in the workforce could lead to increased unemployment and economic hardship in the area.  

“Moreover, a safety incident at Sellafield could have devastating consequences far beyond the immediate community.  

“Contamination of land and water resources would require extensive clean-up efforts, potentially displacing residents.  

“The economic damage of such an event would be incalculable, affecting tourism, agriculture, and broader business confidence in the region. “ 

A joint statement from the NDA/Sellafield Ltd said: "We have been engaging closely with the Department of Energy Security and Net Zero (DESNZ) and the Treasury on our plans and requirements. We will always prioritise the safety and security of our employees, site, and communities while delivering our nationally important mission.”

The NDA also issued a statement in response to the specifics raised in the letter regarding safety stats from the NDA’s annual report: "The increase in near misses does not relate to nuclear safety, it relates to conventional events, such as slips and trips in the workplace, which had potential to cause harm but where harm didn’t occur," they said.

"Our group health and safety incident rate is in line with the wider industry. However, we are never complacent and any incident which compromises safety is one too many.

"We are working to further improve safety performance, including increasing face-to-face training, further developing our positive leadership culture, and improving the quality of root cause investigations.”