The fire brigade said 40 fire engines and 200 firefighters had been called to the blaze at Grenfell Tower, which has 120 flats.
So far the London Ambulance service has confirmed 30 people have been taken to hospitals across the capital, but there are still "a significant number of people" unaccounted for.
Multiple people are being treated for injuries and residents are being evacuated.
THE 24-storey tower block is in an area of West London, very close to Latimer Road Station.
Minutes of a KCTMO board meeting on 20 July 2016 said that the company was told to install self-closing devices on all flat entrance doors and review ventilation in lifts and communal staircases.
A fire and rescue service earlier said the building had 27 floors.
The cause of the fire, which broke out just before 1am local time, is not known, the Fire Brigade said. Clement's church are in wheelchairs and have been brought from adjacent buildings that were evacuated by firefighters because of fears the fire might spread.
"I was just screaming at people: "Get out, get out" and they were screaming back at me: "We can't, the corridors are full of smoke", he told BBC Radio. "They couldn't stop the fire".
Bill Cosby jury wants police testimony read back
Constand, under the influence of the drugs and who briefly lost consciousness, could not and did not give consent, he said. In those interviews, Cosby admitted to sexual contact with Constand and said they had previously had a romantic encounter.
He said he saw people waving torches from the top level of the building and saw rescuers "doing an incredible job" trying to get people out.
The tower, built in 1974, recently underwent an £8.6m redevelopment, with some residents reporting most of the flaming debris falling from the structure was cladding added during that process.
Four hours after the alarm was raised, flames could still be seen on several floors of the blackened residential building, which was shrouded in a cloud of thick black smoke.
The London Fire Brigade said it believed it was due to a faulty Whirlpool tumble dryer which was subject to "corrective action" by the manufacturer and was due to be seen by an engineer.
London's fire commissioner says there have been a number of fatalities in a high-rise fire in west London. It's gone. It's just a matter of time before this building collapses. I saw a man who flew out of his window, I saw people screaming for help.
The Grenfell tower block fire is the second major fire to take place in West London in the past year.
"I was in bed and heard "beep, beep, beep" and thought, 'I'll get up and run downstairs as quickly as I could'".
A resident action group had warned of the potential fire risk in the Grenfell Tower apartment block almost 18 months ago, saying a build-up of rubbish during development works posed a serious fire risk.
"We declared a major incident very early, which meant not just the fire service but also the London Ambulance Service, the police and the others were involved at the scene".
He said: "I think the rain helps me a lot, because I was really down in the fourth set and mentally I wasn't ready". Roberto Bautista Agut could be forgiven for any trepidation ahead of his fourth-round clash with Rafael Nadal .
I've never received any detail, briefing on how hacking occurred or how information was alleged to have influenced the campaigns. Sessions said he was following Justice Department policy and would not discuss confidential communications with the president.
But bizarrely Ms Thornberry insisted that Labour had not lost the election, despite having far fewer MPs than the Tories;. As you can see, Corbyn misinterpreted Thornberry's pointed finger pose for a prelude into a good old fashioned fiver.
Officials could not immediately confirm United States media reports that Warmbier had fallen into a coma during his incarceration. But State Department spokeswoman Heather Nauert told reporters Rodman had nothing to do with Warmbier's release.
Systems (including NVIDIA's own GeForce GTX Battlebox) and laptops containing these cards will also qualify for the bundle. Running at 4K60, the PC version of Destiny 2 looks to be the definitive experience. provided you're patient.
When Ruben Neves started captaining Porto at the age of 18, it seemed like he had everything to become a star at the club. Porto midfielder Ruben Neves has emerged as a target for Premier League sides Liverpool and Chelsea .
His Real Madrid side played quite poorly this season and he has been dealing with large shares of the criticism himself. This is something which will only further his playing career and his first accolade may come as soon as this summer.
Même si l'on sait d'avance que l'on ne sera probablement pas surpris par le résultat final, ce nouveau Kalof' nous allèche. Assassin's Creed Origins est développé par l'équipe d'Ubisoft Montreal a qui l'on doit Assassin's Creed Black Flag .
Shenmue 3 won't be present during this Sony PlayStation party, but Kingdom Hearts 3 and Final Fantasy 7 Remake might pop up. There were plenty to talk about too, with headliners like Uncharted: The Lost Legacy , God of War , and Days Gone .
Wimbledon will be complicated, says clay king Nadal
A run to final of the Australian Open in January, when he was beaten by old rival Roger Federer , heralded a return to form. The alliance certainly appears to be working well, and Moya will become become Nadal's primary coach when Toni steps aside.
American Student Freed By North Korea Arrives Home
Otto Warmbier , a 22-year-old University of Virginia student , was released after 17 months of detention in the communist nation. Fowle left a Bible in a local club hoping a North Korean would find it, which is considered a criminal offense in North Korea.
Kevin Durant's move to Golden State rewarded with MVP
High-profile recruit Durant was the difference as the Warriors wrapped up a 4-1 series triumph on home court in Oakland . Curry had Durant to complement his game this time, to take some pressure off. "I'm just so happy to be a part of it".
Committee carousel: Comey skates by the tough questions
This week, the big story was former FBI Director James Comey's testimony before the Senate Intelligence Committee. In the wake of Comey's testimony and Trump's rebuttal, the American public has been left with the hard decision.
Chelsea legend linked with a move to Championship
Terry is available as a free agent this summer following his departure from Stamford Bridge after 22 years with the Blues . He said: "I am going to take a few weeks off now with my family to relax before making a decision (on my future)".
Trump makes case for apprenticeships to fill jobs gap
The shortages for specifically trained workers cut across multiple job sectors beyond Trump's beloved construction trades. Participants get on-the-job training while going to school, sometimes with companies footing the bill.
C'est la Journée Mondiale des Donneurs de Sang
Rendez-vous le 14 juin dans votre collecte la plus proche de chez vous! Le geste peut effrayer, voire rebuter. Pour l'occasion, l'Etablissement Français du Sang rappelle que la mobilisation est nécessaire au quotidien.