The building had recently undergone an 8.7 million pound ($11.08 million) exterior refurbishment, which included new external cladding and windows.
A website run by the "Grenfell Action Group" said residents of the tower had expressed concerns over the safety of the building, specifically pointing to fire risks.
In a blog on November 20, the activist group predicted that only "a catastrophic event" leading to "serious loss of life" would bring the outside scrutiny needed to make conditions safe for residents.
The post was the latest in a series that dated back to 2013.
The Grand Tour presenter Jeremy Clarkson took to Twitter to urge those living nearby to help Grenfell Tower residents.
In a statement on the fire, KCTMO said it was "too early to speculate what caused the fire and contributed to its spread", promising to "cooperate fully with all relevant authorities".
"We are aware that concerns have been raised historically by residents".
London Ambulance said it had sent a "number of resources" to the scene, including its Hazardous Area Response Team.
The shooter was identified as James T. Hodgkinson, a 66-year-old home inspector from IL who had several minor run-ins with the law in recent years and belonged to a Facebook group called "Terminate the Republican Party".
Fairfax Media has attempted to contact Rydon and Harley Facades Limited for comment.
Shortly after the shooting, Bernie Sanders, the former candidate for the Democratic presidential nomination, said on the Senate floor that the shooter apparently was a volunteer for his campaign previous year.
Witnesses reported the entire building was on fire by around 2am (01.00 GMT). We will be carrying out a review of these along with reviewing our fire compartmentation reports, which relate to restricting the spread of fires within buildings. The organization's July 2014 newsletter said Grenfell "was designed according to rigorous fire safety standards".
The local council of Kensington and Chelsea, which owns the block, said its focus was on supporting the rescue and relief operation.
"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".
Smoke billows from a tower block severely damaged by a serious fire in north Kensington, West London.
He said regulations for tall buildings were meant to prevent the spread of fire, so if it does occur, "the consequences are often catastrophic".
Residential blocks of flats are built on the principle that every flat is a fire resisting box, every flat's front door should be a fire resisting door, and corridors and the staircase are sealed routes, impervious to smoke and containing nothing flammable.
The scene of the major fire in Notting Hill.
"The residents said this would happen, and the council did nothing", Suzanne said.
'Standardising checks and processes for refurbished buildings and creating formal regulations should be the starting point from today'.
Salix Homes in Salford said all its high-rise blocks comply with regulations, but "following the tragic incident in London, we will now be working with Greater Manchester Fire and Rescue Service and Greater Manchester Housing Providers to look at any lessons that can be learnt" and Hull City Council said similar.
As you will appreciate, this is a completely unprecedented fire.
She added: "In my 29 years of being a firefighter, I have never, ever seen anything of this scale. That is something that will be closely looked at in the very near future".
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