MI5 must face more scrutiny, say families of Manchester bomb victims

Families affected by the Manchester Arena bombing have said MI5 failed them and must be more open to scrutiny.

- Jamie Grierson

In a letter sent to the prime minister and seen by the BBC, the families demanded the Security Service be fully included in a new law designed to stop cover-ups in public life.

The inquiry into the bombing found it could have been stopped if MI5 had acted on crucial intelligence in the months before the attack.

"How many times must MI5 show that it cannot be trusted before something is done?" the letter reads.