Suitable and sufficient is the legal test, and it is qualitative. The assessment must identify the fire hazards, identify the people at risk including anyone especially vulnerable, judge whether the existing precautions reduce the risk far enough, and produce significant findings with an action plan. A generic template with no building-specific reasoning will not meet the test, however neatly it has been filled in.
Section 156 of the Building Safety Act 2022 tightened the recording duty from 1 October 2023: the whole assessment must be written down, including who carried it out. Enforcement sits with the local fire and rescue authority, whose responses run from informal advice through enforcement and prohibition notices to prosecution, where fines are unlimited and imprisonment is available for the most serious cases.