The mother of a Manchester Arena terror attack victim has won backing from the inquiry in her bid to see venues legally required to improve safety measures.
Figen Murray, whose son, Martyn Hett, 29, was one of the 22 people murdered in the suicide bombing, has been campaigning for Martyn's Law to ensure venues have action plans against terror attacks.
Terrorist Salman Abedi had detonated a bomb in his rucksack at the end of a Ariana Grande pop concert in May 2017.
On Thursday, the first of three reports into the attack was published.
Report chairman, Sir John Saunders, has recommended a "rigorous" Protect Duty is introduced by the government.
"So glad the work we have done on Martyn’s Law is coming to some sort of fruition," she tweeted.
"Things just have to move forward now and the necessary changes have to be implemented. Smart venues will already start this process before the legislation even comes in."
The government launched a consultation into the Protect Duty earlier this year.
Brendan Cox, the widower of murdered politician Jo Cox, has praised Ms Murray's work.
"The amazing Figen Murray has fought a four year campaign after the Manchester attack to change the law and improve security to stop other families losing loved ones to terror," he tweeted.
"Today the inquiry supported her. Now the government must act. The public owes her a debt of thanks #MartynsLaw."
Sir John said he "fully supports" a Protect Duty.
"The idea of a Protect Duty has been around for some time but it has been given new impetus by the hard work of Figen Murray whose son was one of the victims of this outrage," he said.
"A government consultation is ongoing and people need to understand how important a Protect Duty will be if introduced and the wide range of people who will be affected by the proposal.
"I fully support the introduction of such a Duty. In relation to the Arena I have recommended that the requirements are stringent. There seems to me no reason why large commercial organisations should not take all reasonable precautions to protect their customers from a terrorist attack."
Ms Murray began campaigning after attending a concert following the death of her son and becoming concerned that no one had searched her bag.
Sir John's report into the Manchester Arena terror attack reveals the atrocity should have been prevented.
The inquiry found that the security services should have been able to prevent Abedi detonating the bomb in the foyer of the arena.
In the 204-page report, Sir John Saunders, says lives could have been saved.
He has made nine recommendations in a bid to prevent future attacks.
“The security arrangements for the Manchester Arena should have prevented or minimised the devastating impact of the attack,” he said.
“They failed to do so. There were a number of opportunities that were missed leading to this failure. Salman Abedi should have been identified as a threat by those responsible for the security of the arena and a disruptive intervention undertaken.
“Had that occurred, I consider it likely that Abedi would still have detonated his device, but the loss of life and injury is highly likely to have been less.”
Sir John said British Transport Police, who were responsible for policing the area, and Arena operators SMG and its contracted event security providers Showsec are all “principally responsible” for missed opportunities leading to the atrocity.
Had any of them challenged Abedi prior to the end of the concert, it is possible only one life may have been lost instead of 22, the report reveals.
