Skripal Salisbury Novichok Attack (Mar 2018)

Introduction

On 4 March 2018, Sergei Skripal — a former colonel in Russian military intelligence (GRU) who had worked as a double agent for British intelligence before being exchanged in a 2010 spy swap — and his daughter Yulia were found slumped on a bench in Salisbury city centre, England. Both were unconscious. They were admitted to hospital in critical condition. UK investigators and Porton Down scientists identified the poisoning agent as novichok A-234, a nerve agent from the Soviet-era Novichok programme, variants of which had also been used later in the Navalny poisoning.

The Attack and Aftermath

Sergei and Yulia Skripal survived after weeks in critical care, though both suffered serious and lasting health consequences. A police officer, Detective Sergeant Nick Bailey, who responded to the scene was also hospitalised with novichok exposure but survived. The most serious casualty was Dawn Sturgess, a local woman who had no connection to the Skripals: her partner Charlie Rowley found a discarded Nina Ricci perfume bottle in Salisbury that had been used to transport the novichok. Sturgess applied what she believed to be perfume to her wrist and died on 8 July 2018 — the only fatality directly attributed to the attack.

OPCW Confirmation

The Organisation for the Prohibition of Chemical Weapons independently verified the identification of novichok A-234 through samples taken from the Skripals, DS Bailey, and from environmental samples in Salisbury. The OPCW's finding corroborated those of Porton Down and was shared with member states. The UK government expelled 23 Russian diplomats; allied governments expelled further Russian diplomats in solidarity.

Identification of the Perpetrators

UK police and intelligence services identified the two primary operatives from CCTV footage, hotel records, and travel documents. They had travelled under the cover names Alexander Petrov and Ruslan Boshirov. Bellingcat and the Insider subsequently identified them by their real identities: Anatoliy Chepiga, a GRU colonel and Hero of the Russian Federation decorated by Putin, and Alexander Mishkin, a GRU military doctor. A third individual, Denis Sergeev, travelling as Sergey Fedotov, was identified as the senior GRU Unit 29155 handler who coordinated the operation.

The Cathedral Interview

In a now-infamous interview on the Russian state broadcaster RT, Chepiga and Mishkin — appearing under their cover names — claimed they had travelled to Salisbury as tourists to visit its famous medieval cathedral. They said they had made the trip twice in one weekend because their first visit had been disrupted by snow. The interview was widely ridiculed internationally as transparently implausible and became a symbol of Russian disinformation brazenness. Putin initially endorsed the men as "civilians" with "no connection whatsoever" to the government.

GRU Unit 29155

Bellingcat's investigation established that the Unit 29155 team responsible for the Salisbury attack had been linked to other suspected assassination attempts and destabilisation operations across Europe. Chepiga's decoration as Hero of the Russian Federation — a presidential award — corroborated investigative findings that the operation had high-level state authorisation. The unit was subsequently designated a sanctions target by the UK and allied governments.

Verdict

Confirmed. OPCW independently confirmed novichok A-234. UK police identified GRU Unit 29155 operatives through forensic and open-source investigation, corroborated by Bellingcat's identification of Chepiga and Mishkin by real name and military record. The use of a state-produced nerve agent by serving GRU officers confirms state direction. The death of Dawn Sturgess from secondary exposure to the discarded delivery mechanism adds to the gravity of the confirmed state assassination attempt.

Mechanism: Novichok, the Door Handle, and the Amesbury Bottle

Novichok is not one chemical but a family of extremely potent organophosphate nerve agents developed under the Soviet Union's Foliant programme, designed to be harder to detect and treat than older agents such as VX or sarin. Some Novichok variants were designed as binary agents, mixed from two comparatively inert precursors immediately before use to simplify handling and storage, though investigators have not said whether A-234 was deployed this way in Salisbury. Investigators, and later the Dawn Sturgess Inquiry, established that the agent was applied directly to the door handle of Sergei Skripal's home — the primary route of exposure for Sergei and Yulia Skripal on 4 March 2018. Rather than carry a contaminated device back through airport security, the operatives are understood to have discarded it. The agent had been crudely repackaged into a counterfeit Nina Ricci perfume bottle, resealed with a domestic heat sealer, and left in Salisbury. It lay undiscovered for nearly four months until Charlie Rowley, Dawn Sturgess's partner, found it and brought it home believing he had picked up discarded designer perfume. On 30 June 2018, Sturgess sprayed the liquid on her wrists; she fell ill within minutes and collapsed later that day. She was admitted to Salisbury District Hospital and died on 8 July without regaining consciousness. The Dawn Sturgess Inquiry later found her cause of death to be hypoxic ischaemic brain injury and intracranial haemorrhage attributable to novichok poisoning, and concluded her condition was unsurvivable by the time paramedics arrived. Rowley was hospitalised in a critical condition and survived, though he has said the effects have lingered. Forensic analysis matched the agent in the bottle to the same production batch used against the Skripals, at roughly 98% purity, physically tying the Amesbury death back to the March attack.

Key Evidence: OPCW's Independent Confirmation and the Third GRU Officer

Two evidentiary strands corroborated the UK's account independently of each other. The Organisation for the Prohibition of Chemical Weapons ran its own laboratory analysis of samples from both Salisbury and Amesbury through an international verification process outside UK government control, confirming the identity of the toxic chemical and noting its unusually high purity — a signature investigators said was consistent with production inside a state military programme rather than a criminal or improvised source. Separately, Bellingcat's open-source investigation, which had already unmasked "Boshirov" and "Petrov" as GRU officers Anatoliy Chepiga and Alexander Mishkin, identified a third operative in February 2019: Denis Sergeev, a senior GRU officer travelling under the alias "Sergey Fedotov." Cross-referencing flight manifests, passport data, and phone metadata, Bellingcat placed Sergeev in London from 2 March 2018 and characterised him as the operation's on-the-ground coordinator rather than a hands-on participant, citing his documented contact with Unit 29155's commander, Andrei Averyanov. A later Bellingcat investigation into Russia's clandestine chemical-weapons research also found that a senior toxicologist at a St Petersburg military-medicine institute exchanged dozens of calls with Averyanov in the weeks before the attack and visited GRU headquarters days before the operatives left for Britain — evidence of institutional, not freelance, involvement. Russian authorities subsequently erased public records of Sergeev's existence.

The Dawn Sturgess Inquiry: Official Findings (2021–2025)

Because Sturgess's inquest risked exposing closed intelligence material, the Home Secretary announced in November 2021 that it would be converted into a full statutory public inquiry. The Dawn Sturgess Inquiry was formally established in March 2022 under the Inquiries Act 2005, chaired by Lord Hughes of Ombersley, a retired justice of the UK Supreme Court. Held predominantly in London, the Inquiry took evidence from dozens of witnesses across open public hearings between October and December 2024, with a smaller number of sessions closed to protect intelligence sources and methods. It published its 179-page final report on 4 December 2025. Lord Hughes concluded that "the operation to assassinate Sergei Skripal must have been authorised at the highest level, by President Putin," and that the GRU officers, their superiors and Putin himself bore sole moral responsibility for Sturgess's death, calling the decision to deploy a nerve agent in a populated city "astonishingly reckless." The report also examined the UK's own handling of the case, finding some avoidable "mixed messaging" between paramedics and police over overlapping opioid and nerve-agent symptoms, but concluded neither this nor earlier assessments of Skripal's security risk had a causative effect on the outcome. The UK government accepted the findings in full.

Russian Denials and the Strongest Counter-Argument

Russia has never accepted any part of this account. Beyond the 2018 "tourists" story, Russian officials and state media have dismissed Bellingcat's identifications as fabrications and, after the 2025 report, characterised the Sturgess Inquiry as a politically timed "show trial" reaching conclusions partly on secret evidence that the public — and Russia — could not test. This is the strongest form of the skeptical case: an inquiry relying in part on classified intelligence is not fully falsifiable by outsiders. It does not, however, stand alone. The OPCW's confirmation ran through a verification process entirely separate from UK intelligence, and Bellingcat's identifications rested on open-source passport records, flight databases and a public photograph of Chepiga receiving Russia's highest state honour from Putin in 2014 — evidence untouched by British authorities and never substantively disputed by Russia beyond blanket denial. Strip out the Inquiry's classified material entirely, and the publicly verifiable forensic and open-source record still independently supports the same conclusion.

Aftermath: Sanctions and International Fallout

The Inquiry's findings prompted the UK's most significant response to the case since the 2018 diplomatic expulsions. On 4 December 2025 the government announced sanctions against the GRU as an institution for the first time, alongside eleven individual officers — eight designated under the UK's cyber sanctions regime and three, including newly named operatives Anatoliy Istomin, Igor Bochka and Aleksey Umets, under the Russia sanctions regime for hostile activity across Europe. The measures freeze UK-held assets and criminalise providing the agency or its officers with funds or services. Officials framed the measures as intended to constrain the GRU's broader campaign of sabotage, cyberattacks and disinformation across Europe, not solely as a response to the 2018 poisonings. The Russian ambassador was summoned to the Foreign Office, and Prime Minister Keir Starmer said the UK would "always stand up to Putin's brutal regime." The Kremlin rejected both the sanctions and the Inquiry's findings as politically motivated.