‘Truly shocking’: UK has enough plutonium to make almost 20,000 nukes

The study lists the UK as holding 119.7 tons of plutonium, the second highest stockpile in the world after Russia with 191.5 tons, and 22.6 tons of Highly Enriched Uranium. The plutonium stockpile is said to be sufficient to arm 19,947 atom bombs, like the ‘Fat Man’ bomb dropped on Nagasaki on 9 August 1945, whilst the uranium stockpile has the potential to be turned into a further 355 devices comparable to the ‘Little Boy’ bomb dropped on Hiroshima three days earlier.

The Nagasaki bomb is estimated to have killed 35,000 – 40,000 people on the day and the Hiroshima bomb about twice that many.

The UK Government and nuclear industry has conceded in the 2022 UK Radioactive Material Inventory that 113 tons of UK-owned plutonium are currently managed by the Nuclear Decommissioning Authority, whilst a further 4 tons are in semi-assembled MOX or other fuel components. An additional 24 tons of foreign-owned plutonium are also held, a further legacy of the costly failure of the UK’s experiment with reprocessing.[3]

Across the world, RECNA estimates that 552 tons of plutonium and 1,260 tons of HEU are held, much of the latter in military hands. These are all deemed to be fissile materials and together could arm 92,000 plutonium bombs like the one used at Nagasaki and almost 20,000 uranium devices like that deployed at Hiroshima.