The Metropolitan Police has advised Kensington and Chelsea Council (RBKC) to block the release of correspondence that would shed light on what action was taken to mitigate fire risks at Grenfell Tower, The Independent can reveal.

Officers are vetting requests for information on the council’s response after it was warned by London Fire Brigade about the potential risks of cladding at Grenfell and other buildings.

The fire service wrote to all 33 London councils on 6 April – two months before the devastating fire ripped through Grenfell Tower claiming up to 80 lives – after concluding that cladding had contributed to another fire in Hammersmith, west London.

But despite repeated requests under Freedom for Information laws about what Kensington authorities did following that warning, the council has refused to provide answers.

In its last response, the council said it had been advised by the police not to release the information amid fears it could interfere with the criminal investigation that officers are carrying out.

Alex Peebles, a solicitor at law firm Duncan Lewis, told The Independent that “a mere assertion from the police or the council” that the information was exempt from disclosure was “unlikely to be sufficient” to justify the block.

He added: “The information cannot be withheld just because there may be risks associated with its disclosure. The council or the police must be prepared to give detailed reasons that explain why the disclosure would or would be likely to cause prejudice to others.”

Moyra Samuels, of the Justice4Grenfell campaign group, said: “For the community, nothing surprises us regarding the behaviour of the council. Of course we demand that they are truthful and transparent but we don’t expect them to be.”

LFB’s assistant commissioner, Dan Daly, warned all London councils they should check cladding was up to standard, and “take account of other fire-safety measures already in place in the building as well as potential mitigation measures to ensure that any potential fire spread does not pose a risk to health and safety”.

The warning followed a fire at the Shepherd’s Court flats in Hammersmith in August 2016, which the fire service believed was exacerbated by external panels.

The Met has asked to see any information about Grenfell Tower RBKC is considering for release under FoI, The Independent has been told.

The council said the fire brigade’s letter was addressed to its director of housing and was later forwarded to the Kensington and Chelsea Tenant Management Organisation (KCTMO), which manages properties on behalf of the council. In the wake of the fire, the council is dealing with all Freedom of Information requests relating to the work of KCTMO.

KCTMO, which is a non-profit company at arms length from the council, was stripped of its management of Grenfell Tower after the fire. A KCTMO spokesman said: “All FoI queries regarding Grenfell Tower-related matters are being handled by RBKC.

“We have not consulted the Metropolitan Police directly on Grenfell-related matters, as this is also being handled by RBKC.”

The council said it had consulted the Met on a total of seven FoI requests about Grenfell Tower. Four requests have been subsequently denied, including The Independent’s, two are in progress and one has been granted.

It said in its rejection notice to The Independent: “At this point in time, it is our belief that the public interest in withholding the information outweighs the public interest in disclosure.”

In the same letter the council went on to claim the Met had “expressed a view that disclosure would or would be likely to prejudice the prevention or detection of crime or the apprehension of prosecution of offenders” – but did not elaborate, beyond re-stating the Met’s belief that it had “reasonable grounds” to think the council and KCTMO had committed corporate manslaughter.

It added: “There is a considerable public interest in the disclosure of information held by the council about the refurbishment of Grenfell Tower, and the cause and spread of the fire.

“Where possible, we will be releasing information that relates to Grenfell Tower. However, there is also a significant public interest in withholding this information so as to not adversely affect the criminal investigation.”

But the Met’s advice did not constitute an order to withhold the information, the force said.

In Pictures: Grenfell Tower after the fire Show all 51 1 /51 In Pictures: Grenfell Tower after the fire In Pictures: Grenfell Tower after the fire Police have released images from inside the tower where at least 58 people have died Metropolitan Police In Pictures: Grenfell Tower after the fire A still from a video shared by polices what appears to be a stationary bicycle sitting among the ashes In Pictures: Grenfell Tower after the fire A still from a video shared by police shows the remnants of a burnt-out bathroom In Pictures: Grenfell Tower after the fire Picture showing the lifts on an unknown floor Metropolitan Police In Pictures: Grenfell Tower after the fire Emergency crews outside the front entrance to the tower Metropolitan Police In Pictures: Grenfell Tower after the fire Fire crews inspecting flats in the burnt out tower London Metropolitan Police In Pictures: Grenfell Tower after the fire Grenfell Tower is seen in the distance PA In Pictures: Grenfell Tower after the fire A drone flies near the scene of the fire which destroyed the Grenfell Tower block REUTERS/Stefan Wermuth In Pictures: Grenfell Tower after the fire 'Theresa May Stay Away' message written on the messages of support at Latymer Community Church for those affected by the fire Ray Tang/REX In Pictures: Grenfell Tower after the fire An aerial view of the area surrounding Grenfall tower Getty In Pictures: Grenfell Tower after the fire Donated shoes sit in the Westway Sports Centre near to the site of the Grenfell Tower fire Getty Images In Pictures: Grenfell Tower after the fire Messages of support for those affected by the massive fire in Grenfell Tower are displayed on a well near the tower in London AP In Pictures: Grenfell Tower after the fire A local resident stands on her balcony by the gutted Grenfell Tower in Latimer Road Getty Images In Pictures: Grenfell Tower after the fire Messages of condolence are left at a relief centre close to the scene of the fire that broke out at Grenfell Tower, EPA In Pictures: Grenfell Tower after the fire A police officer stands by a security cordon outside Latimer Road station Getty Images In Pictures: Grenfell Tower after the fire Firemen examine the scorched facade of the Grenfell Tower in London on a huge ladder AP In Pictures: Grenfell Tower after the fire A search dog is led through the rubble of the Grenfell Tower in London as firefighting continue to damp-down the deadly fire AP In Pictures: Grenfell Tower after the fire Labour leader Jeremy Corbyn comforts a local resident (name not given) at St Clement's Church in west London where volunteers have provided shelter and support for people affected by the fire at Grenfell Tower David Mirzoeff/PA In Pictures: Grenfell Tower after the fire Labour leader Jeremy Corbyn hugs councillor Mushtaq Lasharie as he arrives at St Clement's Church in Latimer Road, where volunteers have provided shelter and support for people affected by the fire at Grenfell Tower Getty Images In Pictures: Grenfell Tower after the fire Labour leader Jeremy Corbyn meeting staff and volunteers at St Clementís Church in Latimer Road David Mirzoeff/PA In Pictures: Grenfell Tower after the fire Firefighters with a dog walk around the base of the Grenfell Tower REUTERS/Peter Nicholls In Pictures: Grenfell Tower after the fire Emotions run high as people attend a candle lit vigil outside Notting Hill Methodist Church near the 24 storey residential Grenfell Tower block in Latimer Road, West London Getty Images In Pictures: Grenfell Tower after the fire Debris hangs from the blackened exterior of Grenfell Tower Getty Images In Pictures: Grenfell Tower after the fire A woman speaks to Mayor of London Sadiq Khan outside Notting Hill Methodist Church near Grenfell Tower in west London after a fire engulfed the 24-storey building Yui Mok/PA Wire In Pictures: Grenfell Tower after the fire A woman holds a missing person posters near the Grenfell Tower block REUTERS/Stefan Wermuth In Pictures: Grenfell Tower after the fire Sadiq Khan speaking with a resident James Gourley/REX In Pictures: Grenfell Tower after the fire Ken Livingstone walks near the scene of the Grenfell Tower fire Getty Images In Pictures: Grenfell Tower after the fire Mayor of London Sadiq Khan is confronted by Kai Ramos, 7, near Grenfell Tower in west London after a fire engulfed the 24-storey building Yui Mok/PA Wire In Pictures: Grenfell Tower after the fire Mayor of London Sadiq Khan speaks to a woman outside Notting Hill Methodist Church near Grenfell Tower Yui Mok/PA Wire In Pictures: Grenfell Tower after the fire Volunteers distribute aid near Grenfell Tower Getty Images In Pictures: Grenfell Tower after the fire Family and friends of missing Jessica Urbano, 12, wearing photographs of Jessica pinned to their t-shirts gather near Grenfell Tower EPA In Pictures: Grenfell Tower after the fire Family and friends of missing Jessica Urbano, 12, wearing photographs of Jessica pinned to their t-shirts gather near Grenfell Tower EPA In Pictures: Grenfell Tower after the fire Family and friends of missing Jessica Urbano, 12, wearing photographs of Jessica pinned to their t-shirts gather near Grenfell Tower EPA In Pictures: Grenfell Tower after the fire People attend a vigil at Notting Hill Methodist Church near Grenfell Tower Getty Images In Pictures: Grenfell Tower after the fire People gather to observe a vigil outside St Clement's Church following the blaze at Grenfell Tower Getty Images In Pictures: Grenfell Tower after the fire People light candles as they observe a vigil outside St Clement's Church following the blaze at Grenfell Tower Getty Images In Pictures: Grenfell Tower after the fire People attend a vigil at Notting Hill Methodist Church near Grenfell Tower Getty Images In Pictures: Grenfell Tower after the fire A man distributes food from the back of a van near the scene of the fire which destroyed the Grenfell Tower block REUTERS/Paul Hackett In Pictures: Grenfell Tower after the fire A firefighter is cheered near the scene of the fire which destroyed the Grenfell Tower block REUTERS/Paul Hackett In Pictures: Grenfell Tower after the fire A T-shirt with a written message from the London Fire Brigade hangs from a fence near The Grenfell Tower block REUTERS/Stefan Wermuth In Pictures: Grenfell Tower after the fire A young girl on her way to lay flowers near Grenfell Tower Getty Images In Pictures: Grenfell Tower after the fire The remains of residential tower block Grenfell Tower are seen from Dixon House a nearby tower block Getty In Pictures: Grenfell Tower after the fire Volunteers prepare supplies for people affected by the Grenfell Tower block which was destroyed in a fire REUTERS/Neil Hall In Pictures: Grenfell Tower after the fire Volunteers move a car to make space for a lorry picking up supplies for people affected by the Grenfell Tower block REUTERS/Stefan Wermuth In Pictures: Grenfell Tower after the fire People distribute boxes of food near the scene of the fire which destroyed the Grenfell Tower bloc REUTERS/Paul Hackett In Pictures: Grenfell Tower after the fire A woman touches a missing poster for 12-year-old Jessica Urbano on a tribute wall after laying flowers on the side of Latymer Community Church next to the fire-gutted Grenfell Tower AP In Pictures: Grenfell Tower after the fire A man looks at messages written on a wall near the scene of the fire which destroyed the Grenfell Tower block REUTERS/Paul Hackett In Pictures: Grenfell Tower after the fire Candles and messages of condolence near where the fire broke out at Grenfell Tower EPA In Pictures: Grenfell Tower after the fire Police carry a stretcher towards Grenfell Tower Rick Findler/PA Wire In Pictures: Grenfell Tower after the fire Emergency services at Grenfell Tower Rick Findler/PA Wire In Pictures: Grenfell Tower after the fire Police carry out a body from Grenfell Tower in west London after a fire engulfed the 24-storey building Rick Findler/PA Wire

A Metropolitan Police spokesman said: “The MPS is carrying out an ongoing criminal investigation into the cause and spread of the fatal fire at Grenfell Tower. This investigation is one of the most complex carried out by the MPS, outside of terrorism. We are committed to finding answers for all those so deeply affected by the tragedy.

“The MPS will consider taking every possible legal step to prevent this investigation from being prejudiced. As such we are made aware of and consulted on whether the release of material under the Freedom of Information Act, at this stage, may prejudice this ongoing investigation.

“The act allows for such consultation to take place, and there are relevant exemptions for non-release of material that may prejudice, at this stage, an ongoing criminal investigation.

“The release of material remains the decision of the organisation who holds it.”

Emma Dent Coad, the MP for Kensington, said it seemed “strange” that the council was refusing to release the information. “There are a lot of unanswered questions in this terrible case, and unsurprisingly some suspicion from local people as to why they are not being answered,” she said.

Maurice Frankel, of the Campaign for Freedom of Information, said: “It makes no sense to defer answering FoI requests until any prosecutions that may be brought are over.

“The public inquiry taking place [will] be looking into these matters anyway and dealing with much of the same information, and you cannot delay disclosure and the learning of lessons for years until any trial is over.”

A Kensington and Chelsea Council spokesman said: “We are an open and transparent organisation and we are responding to Freedom of Information requests relating to the Grenfell Tower fire tragedy as we would do on any other request of this nature.