Four separate government ministers were warned that fire regulations were not keeping people safe, in letters that have subsequently been seen by the BBC.
In the leaked letters, experts warn that those living in tower blocks like Grenfell Tower were “at risk”.
At least 79 people are dead or missing presumed dead after the fire at the London high-rise last week.
The department that received the letters said work to improve regulation and safety had already been under way.
The letters show experts have been worried about fire safety in tower blocks for years.
Following a fatal fire in Lakanal House in south London in 2009, a series of recommendations were made to keep people safe.
They were ignored. The government promised a review of fire regulations in 2013, but it still has not happened.
BBC One’s Panorama has obtained a dozen letters sent by the All-Party Parliamentary Fire Safety and Rescue Group.
Informed by experts, it …