The Security Service gambled BBC correspondent Daniel De Simone had no evidence. A note, an email and a recording proved it ...

It comes just days after the security service apologised for providing ‘incorrect information’ to the High Court in 2022 when ...

The woman’s demand follows MI5’s admission it gave false evidence in her human rights case.

MI5 admits it ‘misled’ High Court over alleged abusive Security Service informant - The secret service misled the court while ...

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.

The head of Britain's domestic spy agency MI5 issued a rare public apology on Wednesday for providing "incorrect information" ...

An ordinary teenager from the suburbs of London spun fantasies in his mind that led to him spying for Iran and then pitching himself as a double agent to British security services before pulling ...

He is considered one of the most successful double agents of the Cold War period in British intelligence history. The MI5: Official Secrets exhibition opens at The National Archives this spring.

An undercover MI5 agent has told a court of how recordings were made of three men allegedly discussing ... at a park in Lurgan in December 2013. The security service officer also confirmed he ...

“It is a mistake to use men ... the security service. Following targets on foot, public transport and sometimes into restaurants or hotels, MI5 watchers have provided a crucial role to British ...

Actor Dirk Bogarde was warned by MI5 that he could be the target of a gay “entrapment” sting by the KGB, newly-declassified files reveal today. The intelligence documents released to the ...