Understand the issue
The owner or employer in every workplace has legal responsibility for carrying out a fire risk assessment. This includes identifying the risk of arson and acting to reduce it. By doing this you can protect your business, the jobs and safety of your employees, your stock, your premises and the service you provide to the community.
The first step is to carry out a very simple risk assessment - try and think about where your premises are particularly vulnerable. If there is a secured fire-door at the back and open access on the shop front, concentrate on the shop front. A sensible ranking of your particular risks will enable you to make the best use of the time you can devote to reducing your risk of arson. This will be more fruitful than putting things off until you can deal with everything at once.
Once you've identified where you may be particularly vulnerable (rubbish piled up, flat roofs next to your premises and so on), work out an action plan to help ensure your business will be safe from arson.