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Spycops sent thousands of surveillance reports to MI5, inquiry documents reveal
Key Excerpts from Article on Website of The Guardian
Posted: January 22nd, 2026
https://www.theguardian.com/uk-news/2026/jan/04/spycops-sent...
Thousands of surveillance reports compiled by undercover police officers who spied on political campaigners were routinely passed to MI5, documents obtained by the spycops inquiry have revealed. Police sent undercover officers on long-term deployments to infiltrate mainly leftwing protest groups and gather enormous quantities of information about their political and personal activities. It can now be revealed that most of those clandestine reports were sent to MI5, helping the Security Service to build up large files on peaceful protesters who were engaged in democratic protests for an array of causes. MI5 still retains these surveillance reports in its files today. Officers have been criticised for spying on thousands of political organisations such as campaigns against racism and nuclear weapons, the Socialist Workers party, justice campaigns and trade unions. Their reports logged personal information about protesters, including their marriages, sexuality, holiday plans and bank accounts, as well as their plans for political action such as demonstrations. Stamped on the surveillance reports are a tell-tale sign – Box 500, a nickname for MI5 ... which confirms that they were sent to the Security Service by the police spies. Working in tandem, senior police officers running the undercover spies and MI5 met regularly to discuss the political groups they wanted to infiltrate. On several occasions, MI5 warned that particular police spies were in danger of being rumbled by activists.
Note: Read more about the spycops scandal and the dozens of activists tricked into having romantic relationships with undercover police. For more along these lines, read our concise summaries of news articles on police corruption.
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