London fire officials said Thursday firefighters had put out a blaze that killed 12 people as it raced through a 24-story apartment building a day earlier, and that an unknown number of people remained inside.
He said that number was expected to rise and firefighters have said they did not expect to find any more survivors after rescuing 65.
Planning documents detailing the refurbishment did not refer to a type of fire barrier that building safety experts said should be used when high-rise blocks are being re-clad, according to Reuters research. "And he is a professional fire officer", Fire Commissioner Dany Cotton told Sky News.
Described by the fire brigade as "unprecedented in terms of scale, speed and spread" the blaze quickly engulfed the building in smoke and flames.
The fire engulfed a 24-storey building in west London in the early hours of Wednesday.
Rydon, the firm that did the refurbishment work, said the project "met all required building regulations", in its latest statement following the fire.
"So by the time the fire brigade got there - and reports say they got there within six minutes, which is really fast - they wouldn't have had a fire to fight", Webb said. "Every single time we were told that the board had satisfied itself that the fire safety was fine".
Hundreds of people have lost their homes as a result of the fire.
Prime Minister Theresa May said a "proper investigation" will be held into the cause of the "terrible" and "tragic" fire.
London firefighters combed through a burned-out public housing tower Thursday in a grim search for missing people as police and the prime minister launched investigations into the deadly inferno, with pressure building on officials to explain the disaster and assure that similar buildings around the country are safe.
Up to 600 people lived in 120 apartments in the Grenfell Tower.
A tenants' group had complained for years about the risk of a fire.
Relatives of two young Italian architects say they are missing in the London high-rise fire and are hoping for a miracle.
Labour Leader Jeremy Corbyn, who too visited the site, said separately that "the truth has to come out".
The Queen and Prince Philip also paid tribute to the emergency services for their "bravery" and putting other people's lives ahead of their own.
May made a brief private visit to the scene amid questions as to how the fire that began just after midnight on Tuesday spread so rapidly all the way from the fourth floor.
Firefighters rescued large numbers of people - some of them in their pajamas - from the 43-year-old block, a low rent housing estate which overlooks upscale parts of the Kensington area. London Mayor Sadiq Khan said many questions must be answered about safety for the scores of other apartment buildings around the British capital.
Celebrity chef Jamie Oliver offered victims free meals at his upmarket restaurant around the corner from the tragedy in North Kensington.
Community centers have been overwhelmed by the food and clothing donations flooding in for those left homeless by the Grenfell fire and have started turning away new donations.
"I also want to record my gratitude and appreciation to the emergency services who have been responding and continue to respond".