RIBA has told ministers that current fire safety guidance makes assumptions that fly in the face of experience from the Grenfell Tower tragedy and that a “comprehensive, transparent and fundamental reappraisal” is required.

The institution’s response to the government’s just-closed consultation on its technical review of approved document B of the building regulations said existing guidance had been undermined by 2017’s Grenfell Tower fire – which claimed 72 lives – and had to be revisited.