Announcing the decision in the Daily Telegraph on Thursday, MI5 boss Ken McCallum beat every commentator to the lowest hanging fruit, writing, "You can insert your own joke about whether we will ...

Russian spies are targeting Britain with Cold War-style sabotage, the director general of MI5 has warned. Writing exclusively for The Telegraph, Ken McCallum said Vladimir Putin’s intelligence ...

The boss of MI5 has described the rise of children being investigated for terrorism in the UK as "staggering" as he warned of "canny online memes" drawing them into extreme right-wing ideologies.

Prince Andrew is said to have demanded a face-to-face meeting with MI5 amid the Chinese spy controversy, with it later cancelled at the last minute by the intelligence agency's boss. The Duke of ...

Speaking after gunmen killed 12 people in an assault on a French satirical newspaper, MI5 boss Andrew Parker warned a strike on the United Kingdom was highly likely. "A group of core al Qaeda ...

Duke of York was due to meet agency boss Sir Ken McCallum to address security concerns but appointment was cancelled at last ...