Sir Ken McCallum under pressure after Security Service found to have lied in attempt to prevent BBC from unmasking one of its operatives

It comes just days after the security service apologised for providing ‘incorrect information’ to the High Court in 2022 when the Attorney General tried to prevent the BBC from identifying the ‘misogynistic neo-Nazi’ agent who reportedly attacked his girlfriend with a machete.

In 2022, then-Attorney General Suella Braverman went to the High Court to stop the BBC airing a programme that would name a man who has allegedly abused two women and is a covert human intelligence so

MI5 lied to three courts while defending its handling of a misogynistic neo-Nazi state agent who attacked his girlfriend with a machete, the BBC can reveal. Arguing for secrecy, the Security Service told judges it had stuck to its policy of not confirming or denying informants' identities.