MI5

How I exposed MI5's lie about its violent abusive agent

MI5 lied to courts to protect violent neo-Nazi spy

Could calling attacks like Southport 'terrorism' help to prevent them?

MI5's tips for spies and Cambridge Five confessions revealed

MI5 World War Two 'watcher' advice revealed

Queen not officially told for years about Palace spy, MI5 papers reveal

Gary Oldman voices Christmas poem for MI5

MI5 alert on alleged China agent upheld by judges

Arena bomb survivors' claim against MI5 rejected

MI5 'institutionally defensive' after Arena bomb

Russia on mission to cause mayhem on UK streets, warns MI5

Can you keep a secret? Meet the autistic MI5 intelligence officer

Do you have what it takes to be a spy? Video, 00:06:29Do you have what it takes to be a spy?

MI5 does not have to confirm abusive man was a spy

Recordings 'chilling expression of terrorist intent'

Recordings are 'republican pub talk' says lawyer

1993: MI5 goes public for first time. Video, 00:03:381993: MI5 goes public for first time

1987: Australian court lifts ban on MI5 memoirs. Video, 00:01:481987: Australian court lifts ban on MI5 memoirs

1991: MI5 head is a woman. Video, 00:02:181991: MI5 head is a woman

China’s spy threat is growing, but the West has struggled to keep up

Foreign states targeting UK universities, MI5 warns

Hundreds of Manchester bomb survivors to sue MI5

NI terrorism threat level reduced to substantial