More than 250 survivors of the 2017 Manchester Arena attack have filed a lawsuit against Britain's domestic intelligence services, their lawyers said.
In May 2017, 22 people were killed and 100 injured when suicide bomber Salman Abedi, 22, detonated his device at an Ariana Grande pop concert.
Last year, MI5 director general Ken McCallum expressed "deep regret" intelligence was not gathered that might have stopped Abedi.
An inquiry found the bombing might have been prevented had MI5 acted on intelligence received in the months before the attack.
Two pieces of information about Abedi were assessed at the time by the security service to not relate to terrorism.
But Investigatory Powers Tribunal chairman Sir John Saunders said, having heard from MI5 witnesses at secret hearings, he considered that did not present an "accurate picture".
The suicide attack, as concert-goers were leaving the show at the Manchester Arena in northern England, was carried out by Abedi, 22, who was from Manchester but of Libyan descent.
Inspired by ISIS, he used a homemade shrapnel bomb against crowds of mostly young people who had been attending the concert by the US pop star, and parents who had come to pick up their children.
The IPT is an independent body that investigates complaints from people who believe they have been victims of unlawful action by a public authority using covert investigative techniques, and those against the intelligence services.
Delays in relation to one of two pieces of intelligence led to the "missing of an opportunity to take a potentially important investigative action", Sir John, the chairman of the 2023 enquiry, said in his report last year.
“Legal teams representing injured survivors of the Manchester Arena bombing in 2017 can confirm that they have collectively submitted a group claim on behalf of more than 250 clients to the Investigatory Powers Tribunal,” a statement on behalf of Hudgell Solicitors, Slater and Gordon and Broudie Jackson Canter said.
“As it is an ongoing legal matter, we are unable to provide any further details, or comment further, at this stage.”
The three firms are representing the injured survivors’ group.
Manchester bombing — in pictures
MI5 said it would not comment on continuing legal proceedings.
The IPT was established under Section 65 of the Regulation of Investigatory Powers Act 2000.
The tribunal considers complaints under the Ripa and claims under the Human Rights Act 1998.
It considers allegations of unlawful intrusion by public bodies, including the UK intelligence services, the police and local authorities.
It investigates alleged conduct by or on behalf of the UK intelligence services, whether or not it involves investigatory powers.
Who is Salman Abedi?
Abedi was born in Manchester in 1994 and grew up in a family with strong ties to Libya.
He visited Libya during the civil war there and was believed to have received training or help in building a bomb while he was there.
His father, Ramadan Abedi, had made clear on Facebook his support for suicide attacks in the Libya conflict.
Salman and his brother Hashem Abedi were rescued from Libya by the Royal Navy in 2014.
Before the suicide bombing, Salman Abedi was known to security services but was not considered an imminent threat.
He died in the explosion at the arena.
if you go
Getting there
Etihad (Etihad.com), Emirates (emirates.com) and Air France (www.airfrance.com) fly to Paris’ Charles de Gaulle Airport, from Abu Dhabi and Dubai respectively. Return flights cost from around Dh3,785. It takes about 40 minutes to get from Paris to Compiègne by train, with return tickets costing €19. The Glade of the Armistice is 6.6km east of the railway station.
Staying there
On a handsome, tree-lined street near the Chateau’s park, La Parenthèse du Rond Royal (laparenthesedurondroyal.com) offers spacious b&b accommodation with thoughtful design touches. Lots of natural woods, old fashioned travelling trunks as decoration and multi-nozzle showers are part of the look, while there are free bikes for those who want to cycle to the glade. Prices start at €120 a night.
More information: musee-armistice-14-18.fr ; compiegne-tourisme.fr; uk.france.fr
From Conquest to Deportation
Jeronim Perovic, Hurst
The five pillars of Islam
The Matrix Resurrections
Director: Lana Wachowski
Stars: Keanu Reeves, Carrie-Anne Moss, Jessica Henwick
Rating:****
Timeline
2012-2015
The company offers payments/bribes to win key contracts in the Middle East
May 2017
The UK SFO officially opens investigation into Petrofac’s use of agents, corruption, and potential bribery to secure contracts
September 2021
Petrofac pleads guilty to seven counts of failing to prevent bribery under the UK Bribery Act
October 2021
Court fines Petrofac £77 million for bribery. Former executive receives a two-year suspended sentence
December 2024
Petrofac enters into comprehensive restructuring to strengthen the financial position of the group
May 2025
The High Court of England and Wales approves the company’s restructuring plan
July 2025
The Court of Appeal issues a judgment challenging parts of the restructuring plan
August 2025
Petrofac issues a business update to execute the restructuring and confirms it will appeal the Court of Appeal decision
October 2025
Petrofac loses a major TenneT offshore wind contract worth €13 billion. Holding company files for administration in the UK. Petrofac delisted from the London Stock Exchange
November 2025
180 Petrofac employees laid off in the UAE
THE DEALS
Hamilton $60m x 2 = $120m
Vettel $45m x 2 = $90m
Ricciardo $35m x 2 = $70m
Verstappen $55m x 3 = $165m
Leclerc $20m x 2 = $40m
TOTAL $485m
UAE currency: the story behind the money in your pockets
Know your Camel lingo
The bairaq is a competition for the best herd of 50 camels, named for the banner its winner takes home
Namoos - a word of congratulations reserved for falconry competitions, camel races and camel pageants. It best translates as 'the pride of victory' - and for competitors, it is priceless
Asayel camels - sleek, short-haired hound-like racers
Majahim - chocolate-brown camels that can grow to weigh two tonnes. They were only valued for milk until camel pageantry took off in the 1990s
Millions Street - the thoroughfare where camels are led and where white 4x4s throng throughout the festival
The specs
Engine: 3.8-litre V6
Power: 295hp at 6,000rpm
Torque: 355Nm at 5,200rpm
Transmission: 8-speed auto
Fuel consumption: 10.7L/100km
Price: Dh179,999-plus
On sale: now
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Who's who in Yemen conflict
Houthis: Iran-backed rebels who occupy Sanaa and run unrecognised government
Yemeni government: Exiled government in Aden led by eight-member Presidential Leadership Council
Southern Transitional Council: Faction in Yemeni government that seeks autonomy for the south
Habrish 'rebels': Tribal-backed forces feuding with STC over control of oil in government territory