Five men are being held in Britain after being arrested close to the Sellafield nuclear site, police said today.

UK authorities should ensure the Thorp plant at Sellafield remains permanently closed down, it was claimed today as the nuclear operators were fined €743,000 following a radioactive leak.

The firm that runs Sellafield nuclear reprocessing plant faces an unlimited fine after pleading guilty in court to safety breaches over a radioactive leak today.

A recent leak at Sellafield nuclear engineering plant could close part of the site for months, it was reported today.