More than 300 people had sued MI5 on grounds its failure to prevent the 2017 atrocity breached their human rights

The families of the Manchester Arena bomb victims have said they are “extremely disappointed” after judges ruled they could not continue their legal action against MI5.

More than 300 people affected by the suicide blast had sued the Security Service on the grounds that its failure to prevent the atrocity on 22 May 2017 breached their human rights.