Mark Bullen, a former Hertfordshire Police officer who emigrated to Russia over a decade ago, has become the first British person known to have had their citizenship revoked on the grounds of links with Russia. The extraordinary case — which involves national security concerns, a Terrorism Act detention at Luton Airport, and a former police officer who built a life in St Petersburg — has prompted significant debate about the boundaries of the Home Office’s powers and the rights of UK citizens abroad.
Who Is Mark Bullen?
Originally from Bracknell in Berkshire, Bullen spent 11 years working for Hertfordshire Police, where he developed a deep fascination with Russia. He was reportedly the only Russian-speaking officer in the force and wrote a book on Russian crime during his time there. His record, by all accounts, was exemplary — he received two commendations and was named officer of the year.
In 2014, Bullen made the significant decision to move to St Petersburg permanently with his partner. Upon arriving in Russia, he was hired by the historic football club Zenit St Petersburg for their social media team, a role that leaned directly on his fluency in both English and Russian. Over the years that followed, he built a life there with his wife and four children.
Detained at Luton Airport
Despite his years away from the UK, Bullen continued to travel back and forth. On one of those visits, he was detained at Luton Airport under the Terrorism Act. Officers questioned him for four hours before releasing him without charge. No allegations of specific criminal activity were made during that detention.
Then, in October last year, Bullen received a letter from the Home Office informing him that his British citizenship had been revoked. The letter cited national security concerns as the reason for the decision. Bullen says he was blindsided by the move.
Bullen’s Response
Speaking publicly about the citizenship revocation, Bullen has been consistent in his denials. He says he has never been charged with any offence, that his police record was unblemished, and that he considers himself to be no threat whatsoever to the United Kingdom. He has described the decision as deeply unjust and says he does not understand the basis on which the Home Office concluded he posed a national security risk.
“I’ve never been charged, I have a perfect police record, I received two commendations, and I was named officer of the year,” Bullen said in comments he made last year. He added that the revocation has created profound uncertainty for him and his family, all of whom remain in Russia.
A Landmark Decision
The significance of this case extends well beyond Bullen himself. He is believed to be the first British person to have their citizenship stripped specifically because of their links to Russia — a country that the UK government considers a hostile state. The Terrorism Act detention and subsequent citizenship revocation reflect the broader hardening of the British government’s posture toward Russia since the invasion of Ukraine.
Civil liberties organisations have raised concerns about the use of citizenship deprivation powers, which have historically been used in cases involving terrorism suspects rather than individuals who have simply chosen to live in a country the government considers hostile. The question of whether living and working in Russia — without any specific criminal conduct — is sufficient grounds for citizenship removal is one that legal experts are watching closely.
The Broader Context
The Bullen case comes at a time of considerable tension between the UK and Russia, with the British government having introduced a range of measures aimed at limiting Russian influence in the country. The Home Secretary has broad powers to revoke citizenship where it is deemed conducive to the public good, and national security grounds are among the most commonly cited justifications for such decisions.
Whether Bullen’s case will be subject to a legal challenge remains to be seen. For now, he remains in St Petersburg with his family, stripped of the citizenship of the country where he once served with distinction.