An action group at a west London tower block ravaged by a deadly fire has said its warnings fell on "deaf ears" after it highlighted safety concerns.
The cause of the blaze at Grenfell Tower, north Kensington, is not known, but a blog post from Grenfell Action Group in November said "only a catastrophic event" would expose the issues.
Several hundred people are thought to have been in the block when the fire was reported at 1.15am on Wednesday, and the Metropolitan Police has confirmed six deaths and warned that the death toll is likely to rise.
London Ambulance Service says 20 people injured in the fire are in critical care.
The group said there was only one entry and exit to the tower during improvement works at the block in Latimer Road and it had issues with evacuation procedures.
After the fire, the group posted: "All our warnings fell on deaf ears and we predicted that a catastrophe like this was inevitable and just a matter of time."
Here is everything we know about the Grenfell Tower fire so far pic.twitter.com/PXcTJ4Wqs7
— Press Association (@PA) June 14, 2017
The group claimed access to the building was "severely restricted" for emergency services and other vehicles and that residents were advised to stay in their flats in case of fire.
The tower block was recently refurbished at a cost of £8.7 million, with work completed in May last year.
The exterior of the 1970s-built tower was modernised with cladding and replacement windows, while additional homes were added using vacant space in the building.
On its website, Rydon Construction said: "Externally, rain screen cladding, curtain wall facade and replacement windows were fitted, improving thermal insulation and modernising the exterior of the building."
But a resident of the 17th floor of the block, identified as Methrob, told LBC Radio the "real issue was when it caught fire to the cladding outside".
He added: "That's when I noticed the fire from outside when I looked out the window.
"By the time that we got downstairs, the fire had gone all the way up and it was just about reaching our windows on the 17th floor.
"The whole one side of the building was on fire. The cladding went up like a matchstick."
Methrob said residents had been concerned about safety, adding there had been warnings "for over a year".
He said one man was "trying to get everyone to get together to do something before it was too late".
What we know so far:
A massive blaze has engulfed a block of flats in west London with witnesses reporting people being trapped in their homes.
What happened?
Firefighters were called to Grenfell Tower in north Kensington, west London, just before 1am on Wednesday as fire ripped through a 24-storey block of flats.
Residents who escaped the building, which contained 120 flats, spoke of others trapped and screaming for help, with some holding children from windows and others jumping from upper floors.
Major incident declared at Grenfell Tower in Kensington. 40 fire engines & 200 firefighters at the scene – follow @LondonFire for updates.
— Sadiq Khan (@SadiqKhan) June 14, 2017
Pictures from the scene showed flames engulfing the block and a plume of smoke visible across the capital, while others showed residents looking out of windows in the block.
The cause of the blaze is not yet known.
The smell of it. Fire now covers all windows where people were. #grenfelltower #london pic.twitter.com/4Dp7LnGDGR
— Fabio Bebber (@biobber) June 14, 2017
How many people were caught up in it?
There have been a “number of fatalities” in the block, London Fire Commissioner Dany Cotton told reporters. Thirty others have been taken to five hospitals.
The leader of Kensington and Chelsea Borough council Nick Paget-Brown said “several hundred” people would have been in the block when the fire broke out.
Nicky Paramasivan, who was in his seventh floor flat with his partner and child, said the advice issued to residents in the event of a fire was to stay in their flats.
“If we’d listened to them and stayed in the flat we’d have perished,” he told the BBC.
He said that after they fled, explosions from the flats had blue flames, suggesting gas.
How did firefighters respond?
Firefighters continue to work extremely hard at the scene of #NorthKensington tower block fire https://t.co/QYF9V38wWJ pic.twitter.com/GJqaJV3H0i
— London Fire Brigade (@LondonFire) June 14, 2017
More than 200 firefighters from north Kensington, Kensington, Hammersmith and Paddington and surrounding stations were at the scene with the blaze burning from the second to the top floor.
Were there warnings something like this could happen?
A blog post from Grenfell Action Group in November said “only a catastrophic event” would expose issues residents had with the building’s safety.
The group said there was only one entry and exit to Grenfell Tower during improvement works at the block in Latimer Road and it had issues with evacuation procedures.
Following the fire, the group posted: “All our warnings fell on deaf ears and we predicted that a catastrophe like this was inevitable and just a matter of time.”
The group claimed access to the building was “severely restricted” for emergency services and other vehicles and that residents were advised to stay in their flats in case of fire.
The building was constructed in 1974, according to the Royal Borough of Kensington and Chelsea. It was upgraded at a cost of £8.6 million with work finishing in May last year.
Is there anything people can do to help?
People only have their pyjamas Need spare clothes, toys, toiletries – all ages:
St Clements Church
95 Sirdar Rd
W11 4EQ#GrenfellTower pic.twitter.com/DYRaqMSaF5— Sophia Cannon (@SophiaCannon) June 14, 2017
As many of the residents left the block in their nightwear, nearby St Clements Church is appealing for spare clothes, toiletries and toys.
A casualty bureau has been set up for anyone concerned about friends and family on 0800 0961 233.