The Metropolitan Police has submitted its final investigation file into the Grenfell Tower fire to the Crown Prosecution Service (CPS), seeking charges against 54 individuals and 20 companies.

These include corporate manslaughter, gross negligence manslaughter, health and safety offences, fraud and fraud-related offences and misconduct in public office.

The Met described the case into the fire which killed 72 people at the tower block in North Kensington, west London, as one of the “most complex investigations ever undertaken by any UK law enforcement agency”.

The CPS said charging decisions would be made before the 10th anniversary of the disaster, which is on 14 June 2027.

A public inquiry report released in 2024 found the fire was avoidable and set out how a chain of failures across government and the private sector led to the disaster.

The Met’s investigation, Operation Northleigh, has run in parallel with the public inquiry into the disaster, but detectives waited for the inquiry to publish its findings before completing their work.

Some bereaved families and survivors have said this delayed justice, but it allowed police to consider the inquiry’s often highly technical conclusions.

Grenfell United, a bereaved families and survivors group, said “no family should have to fight this hard, for this long, for justice”.

“It has taken more than nine years to get here. Nine years, and no one has been held criminally accountable for the deaths of our 72 loved ones.

“We want those responsible to face justice. If people are found guilty of crimes that cost our loved ones their lives, we want to see them behind bars.

“Only then will people see that there are real consequences for what happened at Grenfell.”

Joe Powell, MP for Kensington and Bayswater, welcomed the news but said bereaved families and survivors “have already waited an agonising nine years for justice”.

“My position remains clear that we must do everything in our power to ensure that justice is delivered as swiftly as possible.

“I will continue working with government ministers to ensure everything is done to avoid any further delays,” he added.

The charred remains of Grenfell Tower were a crime scene for 14 months, during which forensic teams scoured the building for evidence of why the fire spread so quickly.

Detectives commissioned their own laboratory tests and examined thousands of pieces of debris from the fire, including the fridge which malfunctioned in a fourth-floor flat, from where the flames spread rapidly to the rest of the building.

The evidence has been kept in a warehouse at a secret location, which the BBC visited last year.

Police have investigated the actions of 15,000 people across 700 organisations or companies and taken 14,700 statements.

The investigation has also examined 45,000 documents, images and exhibits.

The files sent to the CPS include examples of this evidence, as well as reports containing more than two million words.

The CPS will decide whether there is a realistic prospect of conviction, as well as considering whether bringing charges is in the public interest.

In anticipation of possible criminal proceedings, the Met has said it is building a replica of a section of the tower, which is being dismantled, to help future jurors understand its layout.

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