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

The Home Secretary has said she is “deeply concerned” that MI5 gave false evidence to the High Court and that the Government accepts a further investigation should take place.

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

Premature’ to decide whether MI5 should face contempt probe in BBC injunction case, judges rule - An injunction was granted ...