The British government said Thursday that at least six hundred buildings in England have exterior cladding panels, similar to the type blamed for the quick spread of flames in the London Grenfell Tower. At least seven of them have been identified as being "combustible" at this stage, according to a Government spokesman. The fire, which broke out in the early hours of June 14, consumed the west London building within about an hour, and killed at leas 79 people.