Fire Extinguisher Regulations UK – a simple guide to fire safety

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Fire extinguisher legislation in the UK can feel a little complicated for some people. That’s why we wrote this simplified guide to the UK’s current laws on fire extinguishers.

As with all fire safety legislation in England and Wales, UK Fire Extinguisher regulations form part of ‘The Regulatory Reform (Fire Safety) Order 2005’, also known as the ‘RRO’.

All premises used for non-domestic purposes, with a few minor exceptions, come under this order.

You can read the RRO here.

Whilst the legislation has been responsible for dramatically reducing commercial fires in the UK, it can be difficult to interpret if you’re not a fire safety professional – which is why we have answered some of the most frequently asked questions below as clearly and simply as possible.

who is responsible for using a fire extinguisher?


1. What is the minimum number of extinguishers I legally have to have?

We are often asked ‘How many fire extinguishers are required in a business premises?’

UK fire extinguisher standards recommend that you should have a minimum of two ‘Class A’ extinguishers on every storey of the building.  Class A fire extinguishers are those which put out wood or paper fires, also known as ‘carbinaceous’ fires.

Class A fire extinguishers meeting this regulation are: –   3 litre foam extinguishers
–   6 litre foam extinguishers
–   9 litre water extinguishers

So you need at least two of any of the above on each floor.

Exceptions to the rule: if your premises are very small and it would be a hindrance to escape having two extinguishers, then only one may be needed.  An example would be a newspaper kiosk.

how many fire extinguishers are required in a business premises


2. Are there other types of extinguisher I have to have?

Depending on the equipment in your business premises, you are likely to need other types of fire extinguisher.

The most common of these are CO2 extinguishers which are used to fight electrical fires.

UK fire extinguisher regulations specify: –   All premises with electrical equipment must have at least 2kg CO2 extinguishers
–   Where there is 415 volt rated equipment, then 5kg CO2 extinguishers are required

There are very few exceptions where you won’t need a CO2 extinguisher which is why it is very common to see these paired with foam or water extinguishers, thereby meeting UK fire extinguisher legal requirements.

CO2 fire extinguishers - fire extinguisher regulations UK

Other types of extinguisher you may need are: –   Dry powder extinguishers: for gas risk, e.g. in boiler rooms (not recommended for other indoor use)
 –   Wet chemical extinguishers: for kitchens with deep-fat fryers (size of extinguisher depends on size of fryer)

Find out more about the different types of fire extinguishers.


3. Where should extinguishers be located?

The ‘standard pair’ water-based and CO2 fire extinguishers are usually located by exits and fire alarm call-points.

Exceptions to the rule: if your building has a lot more exits or fire alarm call-points than the number of extinguishers you need, then the 30 metre rule below dictates where they should go.

The 30 metre rule comes from current UK British Standards (BS5306) and states that you should be no more than 30 metres from the appropriate extinguisher on any given level of your premises.

‘Specialist’ extinguishers, such as wet chemical and powder extinguishers should be positioned within easy reach of the specific fire hazard – e.g. the deep fat fryer.

Fire extinguisher locations according to uk fire extinguisher regulations


4. How should extinguishers be ‘fitted’?

To comply with fire extinguisher regulations, extinguishers should be either fixed to the wall, or attached to a stand.

This is to discourage people from moving them around, for example, using them to prop doors open.

All extinguishers should also be clearly signposted with fire extinguisher ID signs fixed to the stand or the wall.  Extinguisher ID signs explain which type of extinguisher they are, and how and when to use them.

extinguishers in a stand as per uk fire extinguisher legislation

Read more about Safety Sign legislation in our blog.


5. Can I buy extinguishers online without going through a fire protection company?

You can, of course, buy fire extinguishers yourself online.  Just be sure that they are the right type and size for your premises and that you know where to locate them.

Fire extinguishers must be commissioned on-site by a competent person.  This generally means someone who has passed the BAFE fire extinguisher exam or has an equivalent qualification.

Unfortunately fire extinguishers cannot be commissioned before they are installed.  This is because issues may arise during the installation itself.

For this reason, you will usually still need to contact a fire protection company to commission your fire extinguishers, even though you sourced them online.

fire extinguisher legislation uk

6. What is fire extinguisher commissioning?

‘Commissioning’ means that your fire extinguishers have been thoroughly checked and approved as good for use.

Fire extinguishers are not compliant with UK fire extinguisher legislation until they have been commissioned, even if you have the right types and sizes of extinguisher in the right locations.

Examples of things checked during commissioning are: –   The extinguishers have been assembled properly
–   Hoses and horns are correctly attached
–   They are of the right weight or pressure
–   They are undamaged

The extinguisher engineer will provide you with a certificate as evidence that your extinguishers have been commissioned in accordance with UK regulations.

fire extinguisher commissioning uk

7. How often should fire extinguishers be serviced?

Fire extinguisher regulations state that extinguishers must be serviced annually (i.e. once a year) by a competent person.

Again, this generally means by someone with the relevant BAFE qualifications or equivalent.

how often should a fire extinguisher be serviced

8. What happens during a fire extinguisher service?

A fire extinguisher service checks a number of things: –   Is the extinguisher in date?
–   Is it in visibly good condition?
–   Has it been tampered with?
–   Is the weight and/or pressure correct?
–   Does the pin work?
–   Is the hose in good working order?
–   Are the instructions on the extinguisher legible?

At the end of the service, the engineer will be able to tell you which extinguishers need replacing, or advise on additional extinguishers you may need to bring you in line with regulations.

Fire extinguisher servicing - fire extinguisher regulations


9. What ‘evidence’ do I need that my extinguishers have been serviced to regulations?

If, during a health and safety or fire brigade visit for example, you need to demonstrate that your extinguishers have been adequately serviced, there are a number of things to look for:

1. There will be a service label on the extinguisher showing that it has been serviced in the last year and saying when the next service is due.

2. The service label will record the outcome of the last service as one of the following: –   received a basic service
–   was refilled
–   needs replacing (in which case a new extinguisher should have been purchased)

3. There will be something preventing the pin being accidentally pulled out, such as an ‘anti-tamper tag’.

Exception to the rule: this is not the case for extinguishers with plastic pins which have a different design.  For these types of extinguisher, the pin itself should be replaced every year.

4. The O-Ring will have been replaced (an O-Ring makes sure the extinguisher has an airtight seal).

5. You will have an in-date service certificate from a BAFE qualified individual or organisation.

extinguisher with anti tamper tag


10. How often should fire extinguishers be replaced according to regulations?

BS5306 recommends that fire extinguishers are tested by discharge every five years (water foam and powder) and refilled or replaced, and every ten years (CO2).  CO2 bottles are hydraulically tested at the ten year point, or the extinguisher is replaced.

You should also consider that BAFE  and the Environment Agency advise against the discharge of water based fire extinguishers onto open land or down drains to prevent hazards to the environment. It is for this reason that we recommend the replacement of extinguishers at the test point rather than test discharge.  Our returned extinguishers are then disposed of in an environmentally responsible way.

Exceptions to the rule: if an extinguisher is damaged, discharged or otherwise unable to be used safely, then it should be replaced immediately.

you should replace most fire extinguishers every 5 years


11. Can I get my extinguishers refilled instead of replacing them?

For environmental reasons, it is not advised to pour the contents of fire extinguishers into public drains.

For this reason, latest guidelines recommend replacing extinguishers rather than refilling them – because the residue would have to be disposed of by specialist means.

This also means that, these days, the cost to replace extinguishers is usually on a par with refilling.

fire extinguisher refill advice

12. Who is responsible for using a fire extinguisher?

It’s simply the responsible person. It can be an owner, employer or a designated employee, often referred to as a fire marshal or fire warden.

It’s necessary and obligatory to pick a competent person.

Of course, with proper training, anyone can use an extinguisher in the event of an emergency when, e.g., evacuating a building or as a first aid firefighting appliance.


More help with UK Fire Extinguisher Regulations

We hope this simple guide has been helpful to you.

If you’re still unclear on fire extinguisher regulations, or you need specific advice for your business, we can arrange for one of our BAFE accredited engineers to visit your premises and carry out a free, no-obligation survey.

Just get in touch with our friendly team by calling 0800 157 1113 or clicking the button below, they’ll be happy to help.

Information about our fire extinguisher services can be found at the following links.

Fire Extinguisher InstallationFire Extinguisher Servicing

Check out more of our fire safety guides below:

Fire Alarm Regulations

Fire Safety Sign Regulations