Undocumented migrants and illegal subtenants who survived the Grenfell Tower blaze may be unaccounted for and are not seeking state support due to fears over their immigration and housing status, charities and legal experts have warned. Underreporting of illegal subtenants could also mean the death toll is higher than currently assumed, it is feared.

Volunteers and charities working for the support effort in the local community have come across a number of undocumented migrants or asylum seekers who have lost everything following the blaze, but are afraid to seek help from authorities for fears that they could be referred onto police or the Home Office.

Members of the community have also raised concerns that large “swathes” of foreign nationals who lived in the block and may have been undocumented have simply “disappeared” and are not on any missing lists, raising concerns that they have either fled the site or are among the dead but unaccounted for.

Emotional tribute from firemen to Grenfell Tower victims

The Radical Housing Network, a London-wide organisation of which the Grenfell Action Group is a member, has called on authorities to rehouse all residents locally, regardless of their residential or immigration status, urging they must commit to rehousing all residents.

Amid the mounting concerns, a government source said the Met police had committed that if victims living in the UK illegally contact the hotline set up for victims, they will take no action. They did not mention whether Home Office officials would have any involvement.

One local volunteer, who didn't want to be named, said she had heard multiple reports that undocumented migrants living in the flats had “deliberately disappeared” following the blaze, including a large group of Filipinos.

Grenfell fire death toll climbs to 79

“There must have been a bunch of people in that building who probably escaped on the night and probably ran away from the situation. There has been speak from other residents of a whole load of Filipinos living in there that no one has seen since it happened,” she said.

“There will have been other people living in those flats it seems who will have been undocumented. Those people were never there in the first place as far as the social services are concerned. Because of the awful fire, their won’t be any remains either, so there will be this swathe of people who sort of didn’t exist.”

The volunteer said she had come across a young woman who was an over-stayer in the UK and had been living with her boyfriend as a subtenant in his flat since February, and was “very scared” of approaching authorities. Her boyfriend has gone missing and is believed to have died in the blaze. She is very scared and doesn't want to deal with the police at all," said the volunteer.

“She told me she acted dumb in front of police because she wasn't legal. She was frightened. These people worry that the council is in the firing line so if they speak out they’ll hold off sorting out their paperwork. Of course there’s going to be an underlining fear if you’re not completely above board.”

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

Zrinka Bralo, chief executive of Migrants Organise, a support group working in the north Kensington area, said she had come across a male Somali asylum seeker who had lived in the building and was afraid to seek help, adding that there were also many foreign nationals who had not yet appeared on missing people lists. “We helped a Somali man who had been waiting for an asylum decision, and obviously he lost all his papers in the fire. He was afraid to get help, but we encouraged him to go to the north Kensington law centre and he did, and is now getting legal support,” Ms Bralo told The Independent.

“We haven’t even established the number of victims yet and who they are. We know from our community contacts that Moroccans who were not on any of the lists, Sudanese, Eritrean and Ethiopian families who are not on any of the lists.

“Community members are organising wakes and they’re trying to figure out where people are. My main message now is that people shouldn’t be afraid. They should come to the law centre where they will be seen and helped.”

Jolyon Maugham, barrister and director of the Good Law Project, said it is challenging for residents who don't have migrant status, are subletting apartments or are reliant on benefits, to trust the authorities that that are "suspicious and sometimes hostile" towards them. He along with campaigners is calling for an immigration status amnesty for anybody living at the tower block.

Mr Maugham told The Independent: “There are concerns for Grenfell Tower residents without migrant status, and also concerns for those who were subletting apartments, and those receiving benefits and whether receiving money will affect your entitlement to benefits.

“It’s very easy for middle-class people to assume that these objections are all superficial, but the reality is people are very concerned, and I think that if you live in that world that you know how difficult it is to deal with suspicious and sometimes hostile authority.

The public inquiry into the Grenfell fire will explore the council's actions (AFP/Getty)

“People may think I’m not going to get any compensation I’m just going to get deported. Public authorities must commit to rehousing all residents to ensure their future safety and security."

“Grenfell was home to council tenants, private renters, homeowners, subtenants and people staying with family and friends. The council has a responsibility to all of these people. No one should be left in a worse situation by this tragedy.“

A spokesperson from Radical Housing Network urged that public authorities ensure the future safety and security of all residents, saying: “We’re calling on the government in conjunction with Royal Borough of Kensington and Chelsea (RBCK) to act on their commitment to house all Grenfell residents in the local area, in long-term accommodation which meets their needs.

“Crucially, public authorities must commit to re-housing all residents to ensure their future safety and security – Grenfell was home to council tenants, private renters, homeowners, subtenants, and to many people from other countries including migrants and asylum seekers.

“The council has a responsibility to all these people. No one should be left in a worse situation by this tragedy, and the Grenfell community must be allowed to heal together in the local area if they wish to.”

A senior government source said: “The Met have given an absolute commitment that, if anybody who may be living here illegally rings the special hotline set up for victims, they will take no action.