Fire Risk Assessments are compulsory under the Regulatory Reform (Fire Safety) Order 2005 and Fire (Scotland) Regulations 2006 for all companies that employ more than 5 staff (overall throughout all their locations,) and must be in a written format. This should be carried out by a competent person.
If less than 5 employees, although it is still required, it is not necessary to record it in writing. Following the theme of good practice, and in the event of the person who does have the knowledge not being available when the information is requested by an authorised authority, it is advisable to make a record in simple form, which could consist of one or two pages.
If less than 5 employees it is good practice to carry out a fire risk assessment on the units that are being operated.