Woman known only as Beth says abuser claimed status made him untouchable, which terrorised her into silence

MI5 has apologised and paid compensation to a woman who alleged the Security Service was to blame for her being attacked with a machete and abused by one of its agents.

The woman, known only as Beth, was in a relationship with a man she says used his status as an MI5 agent to perpetrate abuse and terrorise her into silence.

The agent was being used to infiltrate the far right and it is alleged his past violence against women had been reported to a police force overseas.

She complained to the Investigatory Powers Tribunal, which oversees MI5, and in an unprecedented move, the agency has paid compensation and made a public apology, as well as a fuller private apology, to settle the case. It continues to deny liability.