IPCO began its secret investigation into MI5's handling of the agent - a genuine neo-Nazi known publicly as X who informed on ...

A white supremacist who "idolised Hitler" planned to carry out a terrorist attack at the Lord Mayor of London's residence, a ...

MI5 is facing fresh scrutiny in the case of a violent neo-Nazi agent after a High Court judge said he had "no confidence" in the Security Service's account of how a senior officer gave false evidence.

The new National Security Strategy document warns Britain is facing "growing threats at home" - as MI5 warn a terror attack ...

A neo-Nazi teenager was snared by police and MI5 as he tried to buy a Makarov pistol for a terrorist attack, a court has ...

MI5 accepts that the status of a neo-Nazi agent should no longer be protected, after previously refusing to confirm if they were an informant. A BBC investigation found MI5 had given false ...

A woman is suing MI5 over an alleged failure to protect her from an abusive relationship with one of its agents.

Moore says the notion that MI5 did not know that McGrath was committing sexual offences against children is “difficult to believe”. He cites a report from the Irish desk of MI5 dated April 14, 1972, ...

MI5 lied "deliberately and repeatedly" as it tried to defend its handling of a neo-Nazi agent who abused women, the BBC has told a panel of High Court judges. The corporation argued the threshold ...

Rosalind Eleazar captures the grief hidden beneath MI5 outcast Louisa Guy’s steely exterior with a subtle and restrained ...

A BBC investigation revealed that the spy agency had lied to three courts about a misogynistic agent who used his MI5 role to coerce and terrorise his girlfriend.

Slow Horses' star Rosalind Eleazar gets real about her MI5 outcast Louisa Guy: ‘She’s really not okay.’ The actress discusses ...