Local authorities have now confirmed that 60 cladding samples taken from as many high-rise buildings across 25 local authority areas have failed fire safety tests.
All of the buildings for which external cladding samples were so far submitted failed combustibility tests, Communities Secretary Sajid Javid said.
Dozens of high-rise apartment towers fail fire safety tests in the aftermath of London's Grenfell tragedy.
Downing Street sources said she is likely to hear how numerous country's high rises are swathed in potentially flammable material.
At least 79 people died inside the furnace that that the Grenfell Tower turned into after it caught fire on June 14.
Stephen Ledbetter, former director of the Centre for Window and Cladding Technology, said it would cost around £1.2m to re-clad a tower block the size of Grenfell. The cladding panels will be replaced with a different type of panel at a later date. "Any building above 18 metres, this would be non-compliant". That is absolutely clear.
He told us he would be willing to move into temporary accommodation, but the council had not yet responded to his calls.
John McDonnell: Grenfell fire victims were 'murdered by political decisions'
Housing Minister Alok Sharma said it was "disappointing" that people wanted to make it "a party political issue", BBC reported. Speaking at Glastonbury festival yesterday, Mr McDonnell characterised the Grenfell fire as a failure of democracy.
'We're making sure that we continue to knock on their door, ' she said.
The news came as the Labour MP for Tottenham, David Lammy, said that the "frankly outrageous" lack of clarity over the number of deaths from the Grenfell Tower disaster was "driving a wedge between authorities and those they are elected to serve", and John McDonnell, the shadow chancellor, said the 79 declared victims had been "murdered by political decisions".
But around a 120 flats the four tower blocks here remain occupied, their residents refusing to leave.
Five buildings failed the tests in Sunderland, four in Manchester, three in Plymouth, three in Stockton-on-Tees, two in Portsmouth, and one each in Doncaster and Norwich.
There are unsafe blocks also in seven London boroughs while a further 11 areas, accounting for 27 of the unsafe buildings, are yet to be named.
In a statement, the DCLG said: "All landlords and fire and rescue services for these local authorities have been alerted to the results, and we are in touch with all of them to support and monitor follow-up action".
Britain said 27 high-rise apartment blocks had failed fire safety checks carried out after the deadly Grenfell Tower blaze, including several in north London where residents were forced to evacuate amid chaotic scenes late on Friday, Reuters reported. Council leader Georgia Gould said those still staying in their homes must leave for the renovations to begin. Amid fears over cladding used on one building in Camden, authorities chose to evacuate residents but the enforced move has not been welcomed by all.
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