Under The Regulatory Reform (Fire Safety) Order 2005
As the responsible person you must carry out and regularly review a fire risk assessment of the premises. This will identify what you need to do to prevent fire and keep people safe.
You must keep a written record of your fire risk assessment if your business has 5 or more RELEVANT people.
So What is a 'Relevant Person
The RRFSO (2005) outlines that the term 'Relevant Persons' means:
Any person (including the responsible person) who is, or may be lawfully on the premises; and,
Any person in the immediate vicinity of the premises who is at risk from a fire on the premises - this may include: staff, students, visitors or members of the public on the street adjacent to the building.