The Ministry of Defence has been accused of trying to avoid responsibility for cleaning up a military nuclear site on the north coast of Scotland by making it "someone else's problem".

The Ferret can reveal that discussions to transfer ownership of Vulcan, a former submarine reactor testing site next to Dounreay in Caithness, to the UK and Scottish governments' Nuclear Decommissioning Authority are at an advanced stage. The aim is to complete the deal in 2027-28.

But no decision has been taken on who will pay for the site's multi-million pound clean-up, including dismantling and disposing of two defunct, radioactive reactors. Unlike some civil nuclear sites, military sites do not have any funding set aside for decommissioning.

Campaigners are concerned that the Ministry of Defence (MoD) could escape paying for the pollution it has caused at Vulcan and other military sites. They are demanding transparency, and calling on the Scottish Government to block any "backroom transfer" that undermines Scotland's interests.

The 26-strong UK group of nuclear-free local authorities is planning to raise the issue with UK nuclear minister, Lord Hunt, at a meeting on 31 March. It will be urging him to extract a promise from the MoD to fully fund the decommissioning of Vulcan.

The MoD promised to deliver "value for taxpayers' money" on the Vulcan clean-up. The Nuclear Decommissioning Authority (NDA) said financing would be agreed with the UK Government "as part of the usual funding process".

Secrecy over radioactive pollution from nuclear bases

Construction work at Vulcan began in 1957, with one reactor operational from 1965 to 1984, and another from 1987 to 2015. They were used for onshore testing of five different designs of reactors to power the UK nuclear submarine fleet.

In 2012 the second Vulcan reactor suffered a mishap, and started leaking radioactivity into its cooling water. When the leak was disclosed two years later, it triggered a bitter argument between the Scottish and UK governments.

The then first minister of Scotland, Alex Salmond, accused the Conservative UK defence minister, Philip Hammond, of deception. Hammond had told MPs that there had been "no measurable change in the radiation discharge" from Vulcan.

But an investigation by the Sunday Herald revealed that there had in fact been a tenfold rise in emissions of radioactive gases. Hammond subsequently corrected the official parliamentary record.

Discussions to transfer responsibility for cleaning up the Vulcan Naval Reactor Test Establishment from the MoD to the Nuclear Decommissioning Authority (NDA) began in 2022. Now, reports released by the Scottish Government under freedom of information law have disclosed how much progress has been made.

An update in January 2025 said that arrangements for the transfer were "moving ahead at full speed". They would be put in place "during the financial year 2027-28".

The update added: "The decommissioning of Vulcan and the optimised management of the waste will serve as the exemplar for decommissioning the UK's nuclear submarines."

There are seven defunct nuclear submarines awaiting decommissioning at Rosyth in Fife and a further 15 at Devonport in Plymouth. Other MoD nuclear sites in Scotland that may eventually need to be cleaned up are the Faslane nuclear submarine base and the Coulport nuclear weapons depot on the Clyde near Helensburgh.

The Scottish Government reports, however, have little to say about how the Vulcan clean-up will be paid for. According to another January 2025 update, a paper on "post-transfer funding options" was "being socialised" within the NDA - though it is unclear what this means.

The costs of decommissioning the more recent civil nuclear power stations, including Hunterston B in North Ayrshire and Torness in East Lothian, will be covered by the UK Government's Nuclear Liabilities Fund. It has secured more than £20 billion from private power companies.

But there is no equivalent fund for cleaning up mil...