Theresa May has said tests on tower blocks following the Grenfell tragedy have shown cladding on some blocks is "combustible".

The Prime Minister said local authorities and fire services concerned are taking "all possible steps" to ensure buildings are safe and residents have been informed.

Mrs May also said the tragedy will not be used to carry out immigration checks on those affected by the tragedy or on those providing "vital" information to identify victims or to assist the criminal investigation.

Mrs May, making a statement to the Commons, said "no stone will be left unturned" in the inquiry.

She also said: "For any guilty parties there will be nowhere to hide."

Mrs May said she expects an interim report to be produced as "early as possible" by the chair of the inquiry.

Mrs May went on: "I know many others living in tall residential buildings will have concerns about their safety after what happened at Grenfell.

"All social landlords have been instructed to carry out additional fire safety checks on tower blocks and ensure the appropriate safety and response measures are in place."

She added: "We've also taken steps to make private landlords aware and make our checking facilities available to them for free.

"The House should, of course, be careful on speculating what caused this fire.

"But, as a precaution, the Government has arranged to test cladding in all relevant tower blocks.

"Shortly before I came to the chamber, I was informed that a number of these tests have come back as combustible.

"The relevant local authorities and local fire services have been informed, and, as I speak, they are taking all possible steps to ensure buildings are safe and to inform affected residents."