New Evidence from a Police Spying Inquiry Could Reopen a Terror Conviction Case

Lawyers for four men convicted of plotting a terrorist attack in the UK say new evidence from a public inquiry into undercover policing could help reopen their case, according to The Guardian.

The four men — Khobaib Hussain, Naweed Ali, Mohibur Rahman, and Tahir Aziz — are sometimes called the "Birmingham Four." They were arrested about ten years before August 2026 and convicted after a secret police operation. That operation involved a fake delivery company called Hero Couriers, which police created to draw in Hussain and Naweed Ali. An undercover officer using the fake name "Vincent" worked alongside the men and regularly parked their cars inside the company's premises as part of the arrangement (The Guardian). On Ali's first day at Hero Couriers, MI5 officers (the UK's domestic intelligence service) said they found a bag under a car seat containing a partially built pipe bomb, a suspected handgun, and a meat cleaver with the word "kafir" (an Arabic term meaning "non-believer") scratched into it.

The men's legal team, led by lawyer Gareth Peirce, asked a body called the Criminal Cases Review Commission (CCRC) to look into the convictions in 2024. The CCRC is an independent organisation that investigates whether people may have been wrongly convicted. If it finds a conviction might not hold up on appeal, it can send the case back to a higher court. As of August 2026, the CCRC had not yet responded. Peirce submitted more material earlier in 2026, including evidence from the undercover policing inquiry (The Guardian).

The evidence Peirce pointed to came from a hearing in November 2025. At that hearing, managers of an undercover police officer said they believed he had made up a gun plot to frame an animal rights activist. Peirce told The Guardian that this had "exact coincidences and parallels" with the evidence used to convict the Birmingham Four. Stephen Kamlish, who represented Naweed Ali at the original trial, is among those whose earlier work the current effort builds on.

The inquiry examining these practices is called the Undercover Policing Inquiry. It is looking into the conduct of undercover officers who secretly spied on more than 1,000 political groups between 1968 and at least 2010. Then-Home Secretary Theresa May announced the inquiry, which began hearings five years later. It might never have happened at all if documents had not been discovered by chance in a van in Italy (The Guardian). The inquiry's website has a page where people can check whether they were affected and come forward with evidence (UCPI).

The inquiry has already uncovered things that raise concerns about how undercover units operated. Documents made public in January 2026 showed that undercover officers sent thousands of reports to MI5, which allowed the intelligence agency to build detailed files on people in legitimate protest groups (The Guardian). Separately, six witnesses told the inquiry that a former undercover officer named Bob Lambert was involved in setting fire to a Debenhams store in 1987 while posing as an animal rights campaigner. Lambert denied any role (The Guardian).

The push to reopen the case goes beyond the lawyers. Hussain's sister Mariam has been working with the Muslim advocacy group Cage to call for a fresh review. In August 2026, Cage released a joint statement signed by several organisations, including the miscarriage of justice charity Appeal and other Muslim advocacy groups, urging the CCRC to immediately review and reopen the case.

The connection Peirce has drawn between the November 2025 testimony and the Birmingham Four case is the heart of the legal argument. If the CCRC accepts that the kind of evidence-faking attributed to undercover officers in the animal rights case could also have happened in the Birmingham Four operation, it may meet the bar for sending the convictions back to the Court of Appeal. The CCRC refers cases when it believes there is a real possibility the conviction would not be upheld on appeal.

What makes this submission especially significant is that the undercover policing inquiry is a formal legal process established by law. The evidence is given under oath, which makes it stronger than a news report or a defence lawyer's theory. When managers of an undercover officer testify under oath that they believed he fabricated a weapons plot to frame someone, that carries a different kind of weight. If that pattern of behaviour is shown to exist within the same police unit that ran the Birmingham Four operation, the argument that the four men's case may have been similarly affected becomes much harder to dismiss.

The main obstacle right now is time. The CCRC received the first application in 2024 and has not said when it will finish its review. The additional material Peirce submitted in 2026 is now part of that ongoing process. Whether the inquiry's growing record of evidence pushes the CCRC toward reopening the case — and how soon — is the question the Birmingham Four's legal team and supporters are waiting to have answered.