You need to have an emergency plan for dealing with a fire situation. 

The purpose of an Fire Emergency Plan is to ensure that the people in your premises know what to do if there is a fire and that the premises can be safely evacuated. If you or your organisation employs five or more people or your premises are licensed or an alterations notice requiring it is in force, then details of your Emergency Plan must be recorded. The document should include a detailed fire evacuation plan of how people will get to safety and where they will assemble.

Even if it is not a requirement, it is good practice to have a plan!

Activate Fire Safety can provide tailored Emergency Plans that are specific to your building

Your Fire Emergency Plan should be appropriate to your premises and usually includes:

• How people will be warned if there is a fire;
• What staff should do if they discover a fire;
• A fire evacuation plan detailing how the evacuation of the premises should be carried out;
• Where people should assemble after they have left the premises and procedures for checking whether the premises have been evacuated;
• Identification of key escape routes, how people can gain access to them and escape from them to a place of total safety;
• Arrangements for fighting the fire;
• The duties and identity of staff who have specific responsibilities if there is a fire;
• Arrangements for the safe evacuation of people identified as being especially at risk, such as those with disabilities, lone workers and young persons;
• Any machines/appliances/processes/power supplies that need to be stopped or isolated if there is a fire;
• Specific arrangements, if necessary, for high-fire-risk areas;
• Contingency plans for when life safety systems such as evacuation lifts, fire-detection and warning systems, sprinklers or smoke control systems are out of order;
• How the fire and rescue service and any other necessary services will be called and who will be responsible for doing this;
• Procedures for meeting the fire and rescue service on their arrival and notifying them of any special risks, e.g. the location of highly flammable materials;
• What training employees need and the arrangements for ensuring that this training is given;
• Phased evacuation plans (where some areas are evacuated while others are alerted but not evacuated until later);
• Plans to deal with people once they have left the premises.