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Government Secrecy

Porton Down: what was done to British servicemen

Britain has its own file. A serviceman died in a nerve agent test in 1953 having been told it was research into the common cold. It took fifty-one years to get an inquest that said so.

ATS Research DeskDocuments and archives
3 min read
Laboratory protective equipment

The Wiltshire site has conducted chemical and biological defence research since 1916.

The MKULTRA material on this site concerns the United States. Britain's equivalent question is Porton Down, and it is not a matter of allegation — it has been through a coroner's court.

The Wiltshire establishment has conducted chemical and biological defence research since 1916. Much of its work is exactly what it says: protective equipment, detection, medical countermeasures. Some of it was not.

Ronald Maddison

Illustration

Leading Aircraftman Ronald Maddison, aged twenty, volunteered for what he understood to be research into the common cold. Servicemen were offered small payments and leave for taking part.

On 6 May 1953 liquid sarin — a nerve agent — was applied to cloth placed on his arm. He collapsed within minutes and died shortly afterwards.

An inquest was held in 1953. It sat in secret, and returned a verdict of misadventure.

The wider testing

Thousands of servicemen passed through Porton Down as volunteers over decades. Many have said they were not told what substances they were exposed to.

Filmed tests from the 1960s in which servicemen were given LSD are held in the archives and have been broadcast.

In 2008 the Ministry of Defence agreed a settlement of £3 million covering around 360 veterans, alongside an expression of regret. It was not an admission of liability.

Why the 2004 verdict differed

The two inquests into Ronald Maddison's death reached opposite conclusions on the same facts, and the reason is procedural.

The 1953 hearing was held in camera on national security grounds. Evidence about what the substance was and what was known about its effects was restricted. The family were present but the proceedings were closed.

The 2004 inquest, ordered after a long campaign and a High Court decision, sat in public with access to material that had since been declassified, and heard from surviving participants.

The jury found that Maddison had been unlawfully killed by the application of a nerve agent in a non-therapeutic experiment.

The open-air trials

Separately, and affecting the general public rather than servicemen: between the 1950s and the 1970s, substances were released into the open air over parts of Britain to study dispersal.

These included zinc cadmium sulphide as a tracer and bacteria selected as harmless simulants for biological agents, released over populated areas and along coastlines.

The trials were acknowledged in a government report published in 2002. The official position is that the materials were not expected to cause harm; families in affected areas have disputed that, and no comprehensive health study has settled it.

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Still open on this one:

  1. 01

    How many servicemen were tested in total?

    Figures in the thousands are commonly given from MoD records. A complete accounting has never been published, and veterans have pressed for one.

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Sources

Open them and check for yourself. Where a record is public, it is linked.

  1. Research guides and catalogue

    The National Archives

  2. The National Heritage List for England

    Historic England

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