Senior judges held out the prospect of holding MI5 officers in contempt as they ordered an independent investigation into how ...

MI5 previously said there had been ‘failings and errors’ in legal proceedings related to an alleged source accused of abusing ...

A ruling by London's High Court cited the domestic intelligence agency's failure to explain why representatives had ...

A decision on whether to issue contempt of court proceedings over false evidence given to the High Court by an MI5 officer ...

The UK is set to significantly enhance its security measures in the wake of increasing threats both domestically and ...

It emerged this year that evidence given by the security agency to an injunction hearing in 2022 was false. The Home ...

Unprecedented probe was led by MI5, UK's domestic security agency, and is understood to have lasted for nearly two ...

British spy chiefs will be expecting a higher level of threat from Iranian agents in the wake of US attacks on the country, a ...

All 25 passengers - personnel from MI5 , British Army and the Royal Ulster Constabulary - were killed, along with the helicopter's four crew members.

According to the newly announced National Security Strategy, the major threats to the UK are nuclear war, international war, hostile states and crime, artificial intelligence, new chemical and ...

Relatives of a man shot dead and secretly buried by the IRA have reacted angrily amid claims MI5 has attempted to block the ...

MI5 could still face contempt of court proceedings following revelations that the intelligence agency provided incorrect ...