Under the Regulatory Reform (Fire Safety) Order, the Responsible Person must carry out a “suitable and sufficient” risk assessment of non-domestic premises. In a workplace, this is the employer and any other person who may have control of any part of the premises, e.g. manager or owner.
The risk assessments should be reviewed periodically and whenever significant changes are made which could affect it, e.g. after building alterations, increases in the number of people present, new materials or processes introduced.