FREED gangster Liam Byrne has been mockingly branded an MI5 agent after his release from prison, we can reveal. Byrne was taunted as a “rat” on social media ­platforms following his release from ...

He admitted meeting a Russian agent who tried to persuade him to also defect and that he was afraid his handler would use ...

The manual gives instructions on preferred appearances, disguises and how to follow targets – but warns against fake ...

The guidance will feature in a new exhibition at the National Archives focusing on the work of the Security Service.

The newly-declassified documents include details about some of the UK's most notorious spies.

Recently released MI5 files reveal confessions from Britain's notorious double agents, including Kim Philby and Anthony Blunt, who spied for the Soviets. These declassified documents, made public by ...

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

Avoid facial disguises, carry loose change and be ready to make split-second decisions: just some of the advice Britain’s domestic spy agency gave recruits tailing subjects nearly a century ago.

Avoid false beards, carry plenty of spare change and know what to do when you need to tell a taxi driver "follow that cab!" - ...