Strength, energy and unfailing personal commitment

• Scope increased with 6m documents to review
• Currently seven main suspects under investigation

Six months since the police team investigating the Post Office Horizon scandal was strengthened to 100, their work continues to gather pace with the scope ever increasing.

Currently, there are over 45 individuals under investigation as enquiries progress, with seven formally identified as suspects.

At its introduction, the team, made up of officers and staff from around the country, began with around 1.5 million documents to review and through evidence gathering this has now increased to 6 million, with both the number of documents, suspects and victims expected to rise.

The investigation is overseen by the National Police Chiefs’ Council and the Metropolitan Police, led by Commander Stephen Clayman. He said:

“Victims remain at the heart of this investigation and our contact with the many people affected by the Post Office Horizon scandal continues to increase. This week (25 June) the whole investigation team met in person for the first time during our operational development day, a valuable opportunity to come together and reaffirm our focus on the investigative strategy and discuss next steps.

“To date, four individuals have been interviewed. Two in late 2021, one in late 2024 and most recently one in early 2025. Formally identifying a suspect and preparing to question them takes a significant amount of time due to the volume of material and enquiries necessary so these numbers will continue to rise as the team’s work progresses.

“We are making progress and laying the foundations for what is to come. We all have a personal commitment to this investigation which goes far beyond documents and evidence. It is about the thousands of lives the Post Office Horizon scandal has impacted and we remain focussed on our goal of securing justice for those affected.”

Four Regional Investigation Teams (RITs) are made up from police forces across England and Wales with Police Scotland and the Police Service of Northern Ireland also making contributions.

For further information and updates on Op Olympos visit: www.police.uk/pu/operation-olympos

Further information about Op Olympos

Additional national oversight of the investigation is provided by a Platinum group, led by NPCC Chair, Chief Constable Gavin Stephens, and comprised of nationally appointed leads for the investigation, finance, Crown Prosecution Service and victim engagement. Its role is to ensure the national team remains resourced to agreed strengths, along with oversight of the financial management of the investigation and support infrastructure. 

The investigation is unprecedented in both its scale and complexity and is truly national in its scope – with most areas across England and Wales affected, along with Scotland and Northern Island. It was determined that a national policing response would be required to effectively investigate the actions of Post Office Limited and its investigators, managers, legal teams and executive oversight, along with staff and executives within Fujitsu. This will involve reviewing millions of documents to identify actions which could amount to criminal offences on both an individual and corporate basis.

Op Olympos is investigating perjury and perverting the course of justice offences in relation to the prosecutions. These prosecutions and the sub postmasters span all police forces with potential suspects across the country.

Op Olympos is not a reinvestigation of these wrongful prosecutions. Whilst the sub postmasters are victims of tainted or missing evidence being presented about them, the offences under investigation are against the Post Office.

The action taken against the sub postmasters provides part of the evidence for perverting the course of justice, however it is not necessary to review each and every case. This strategy has been reviewed and agreed by Crown Prosecution Service throughout and is deemed to meet disclosure and evidential requirements, whilst remaining focussed and proportionate. This will require continuous scrutiny in order to prevent the scope becoming too large and less focussed.