Sellafield ltd has lost its appeal against fines levied against them last year.
In February, the company was fined £700,000 for sending bags of radioactive waste to a landfill site.
The bags, which contained waste such as plastic, tissues and clothing, should have been sent to a specialist facility that treats and stores low-level radioactive waste, but a number of management and operational failings led to them being sent to Lillyhall landfill site in Workington, Cumbria.
Today, the Lord Chief Justice Lord Thomas, sitting in the Court of Appeal with Mr Justice Mitting and Mrs Justice Thirlwall, said there were no grounds for criticising the level of fines imposed.
More top news
Over 100 businesses have shown their interest in a 'transformational' £1million scheme, launched by Copeland Mayor, Mike Starkie.
An award-winning painter is giving artists in Cumbria the the chance to help him create his next piece of art this bank holiday weekend.
A 45-year-old man has died following a fatal road collision in Tweedsmuir. Police Scotland are appealing for witnesses.