The Latest Breaking News from the Security Service

Vasyl Malyuk reportedly unwilling to leave post as head of the Security Service but will now lead special operations

Ukrainian President Volodymyr Zelenskyy has replaced the head of the country's security service as part of a top-level reshuffle

Security minister Dan Jarvis says the government will not tolerate ‘covert and calculated’ attempts by China to interfere with the UK’s sovereign affairs

The collapse of the prosecutions of Christopher Cash and Christopher Berry is a reminder that bringing charges for espionage can be an extremely risky business, particularly in western democracies. Cash and Berry were accused of spying for China, but the CPS dropped the case before it could go to trial.…

Home secretary says raids across UK last weekend reflected some of biggest terrorism threats in recent years

It comes after MI5 apologised unreservedly for providing ‘incorrect information’ to the High Court.

MI5 lied to multiple courts amid the Attorney General’s bid to prevent the BBC from identifying a suspected Security Service informant, a judge…

Then-Attorney General Suella Braverman sought the injunction at the High Court in 2022.

MI5 reveals confessions of three members of infamous Cambridge Five spy ring as tranche of documents released into National Archives