Do You Need a Defibrillator at Work? UK Workplace AED Requirements Explained

UK employers are not legally required to have a defibrillator at work, but the updated British Standard BS 8599-1 (April 2026) now recommends that workplaces with five or more people present should have an AED accessible within two minutes. Combined with an employer's common law duty of care and the Health and Safety (First-Aid) Regulations 1981, the case for installing one has never been stronger.

Around 140,000 people in the UK die from cardiac arrest each year. Without a defibrillator, the survival rate sits at roughly 5%. When an AED is used within the first few minutes, that figure rises to as high as 75%. Cardiac arrest does not only affect older workers; it can happen to anyone, at any age, with no prior warning. If someone collapses at your workplace, an AED on the wall could be the difference between life and death.

In this article

• What Does UK Law Say About Workplace Defibrillators?
• What Has Changed with BS 8599-1:2026?
• How Do You Assess Whether Your Workplace Needs an AED?
• What Type of Defibrillator Is Best for a Workplace?
• Where Should You Install a Workplace Defibrillator?
• Do Staff Need Training to Use an AED?
• How Do You Maintain a Workplace Defibrillator?
• Frequently Asked Questions

What Does UK Law Say About Workplace Defibrillators?

There is currently no single piece of UK legislation that makes defibrillators mandatory in workplaces. However, several overlapping legal obligations create strong grounds for providing one:

• Health and Safety at Work Act 1974 requires employers to ensure, so far as is reasonably practicable, the health and safety of employees and anyone affected by their work activities.
• Health and Safety (First-Aid) Regulations 1981 require employers to provide "equipment and facilities as are adequate and appropriate in the circumstances" for first aid. Because cardiac arrest is always fatal without intervention, a risk assessment that identifies this hazard may well conclude that an AED is "adequate and appropriate" provision.
• Common law duty of care means employers can be held negligent for failing to take reasonable precautions. The Resuscitation Council UK has warned of "potential consequences for some employers under common law" if an AED is not provided despite a foreseeable risk.

In short: the law does not say you must have one, but it does say you must manage foreseeable risks. Given that cardiac arrest can happen anywhere and an AED is a proven, affordable intervention, many legal and health-and-safety advisors now treat AED provision as a practical expectation rather than a nice-to-have.

What Has Changed with BS 8599-1:2026?

The British Standard for workplace first aid kits, BS 8599-1, was updated in April 2026. While it remains non-statutory (meaning it is guidance, not law), it carries significant weight in demonstrating compliance with the 1981 Regulations. The key changes relevant to defibrillators:

• AEDs recommended for most workplaces where five or more people are regularly present, including employees, visitors and customers.
• Two-minute access rule: an AED should be reachable from any area of the premises within two minutes.
• Signage and visibility: devices must be clearly marked with standard ILCOR signage so anyone can find them in an emergency.
• Multiple units for larger sites: buildings with multiple floors, wings or outbuildings may need more than one AED to meet the two-minute threshold.

Although BS 8599-1 is not legally binding, courts and the HSE routinely use British Standards as a benchmark for what constitutes "reasonable" provision. Employers who follow the standard are in a far stronger position than those who do not.

How Do You Assess Whether Your Workplace Needs an AED?

The HSE expects employers to carry out a first-aid needs assessment. When it comes to defibrillators, the key factors are:

Risk Factor	Higher Risk	Lower Risk
Number of people on site	25+ employees, or public-facing premises	Sole trader or very small team
Workforce demographics	Older workforce, known cardiac risk factors	Young, physically fit workforce
Nature of work	Physical labour, electrical hazards, extreme temperatures	Sedentary office work
Distance from emergency services	Rural location, average ambulance response over 8 minutes	Urban location near a hospital
Visitors and public access	Retail, leisure centres, hotels, schools	Restricted-access office
Shift patterns	24/7 operations, lone or night workers	Standard office hours with nearby colleagues

Even in a "lower risk" office, cardiac arrest is still possible. The Resuscitation Council UK notes that sudden cardiac arrest can strike anyone regardless of age, fitness or health history. The updated BS 8599-1 standard now recommends provision for any premises with five or more people, which covers the vast majority of UK workplaces.

What Type of Defibrillator Is Best for a Workplace?

Workplace AEDs fall into two categories:

• Fully automatic: the device analyses the heart rhythm and delivers a shock automatically if needed. The user only has to attach the pads and follow the voice prompts. This is the best option for workplaces where most staff have no medical training.
• Semi-automatic: the device analyses the rhythm but asks the user to press a button to deliver the shock. This gives slightly more control and is preferred in clinical or trained-responder settings.

For most offices, warehouses, shops and public-facing businesses, a fully automatic AED is the simplest choice. Modern devices guide the user with clear voice and visual instructions, making them usable by anyone.

Where Should You Install a Workplace Defibrillator?

Placement is critical. An AED that takes too long to retrieve is an AED that may not save a life. Follow these guidelines:

• Accessible within two minutes from any point in the building (the BS 8599-1 benchmark).
• High-traffic, visible locations such as reception areas, main corridors, canteens or near lifts. Avoid locked rooms, offices that may be unoccupied, or areas behind security barriers.
• Wall-mounted in a clearly marked cabinet with standard ILCOR green-and-white signage. The cabinet should be unlocked or have a break-glass mechanism so it can be accessed without a key.
• Multiple units on larger sites. Multi-storey buildings, campuses, warehouses and sites with separate buildings may need an AED on each floor or in each zone.
• Consider outdoor access. If the public could benefit (e.g. a high-street shop), a heated outdoor cabinet ensures the device is available 24/7.

Record the AED location on your fire and emergency plan, and register the device with The Circuit (the national AED network managed by the British Heart Foundation) so that ambulance services know where to direct bystanders.

Do Staff Need Training to Use an AED?

No formal qualification is required to use an AED in the UK. The devices are specifically designed to be used by untrained bystanders, and UK law protects anyone who uses one in good faith during an emergency. You cannot make a cardiac arrest worse by using an AED: the device will only deliver a shock if it detects a shockable heart rhythm.

That said, training significantly improves confidence and response times. The HSE recommends that appointed first aiders receive AED training as part of their First Aid at Work (FAW) or Emergency First Aid at Work (EFAW) course. Beyond appointed first aiders, consider offering basic CPR and AED awareness sessions to all staff. A confident workforce is far more likely to act quickly.

How Do You Maintain a Workplace Defibrillator?

An AED is a medical device and needs regular checks to ensure it works when called upon. Most modern AEDs perform daily self-tests, but employers should also carry out routine visual inspections:

• Weekly visual check: confirm the status indicator light shows "rescue ready" (usually a green tick or flashing light). Check that the cabinet is undamaged and the device has not been tampered with.
• Monthly check: inspect electrode pads for damage or expiry. Check the battery level indicator.
• Replace pads before they expire. Electrode pads have a shelf life (typically 2 to 4 years). Expired pads may not adhere properly or deliver an effective shock.
• Replace the battery on schedule. Battery life varies by model (typically 4 to 8 years in standby). Keep a record of the installation date and replace before the recommended end of life.
• Keep a maintenance log. Record every check, pad replacement and battery change. This log demonstrates compliance with your duty of care.

For a comprehensive look at choosing, installing and maintaining a workplace AED, read our Complete Defibrillator and AED Buying Guide.

Frequently Asked Questions

Is it a legal requirement to have a defibrillator at work in the UK?

No single law makes it mandatory. However, the Health and Safety (First-Aid) Regulations 1981 require employers to provide adequate first aid equipment, and the updated BS 8599-1:2026 standard recommends AEDs for premises with five or more people. Courts may also consider failure to provide one as a breach of the common law duty of care.

Can anyone use a defibrillator, or do you need training?

Anyone can use an AED without formal training. The device guides the user with voice prompts and will only deliver a shock if it detects a shockable rhythm. UK law protects good-faith rescuers. Training is recommended but not legally required.

How much does a workplace defibrillator cost?

Entry-level fully automatic AEDs suitable for most workplaces start from around £800 to £1,200. Professional-grade models with ECG displays and advanced features range from £1,500 to £3,500. Ongoing costs include replacement pads (every 2 to 4 years) and batteries (every 4 to 8 years).

Can a defibrillator harm someone who is not in cardiac arrest?

No. An AED analyses the heart rhythm before deciding whether to shock. If it does not detect a shockable rhythm (ventricular fibrillation or pulseless ventricular tachycardia), it will not deliver a shock. You cannot accidentally harm someone by attaching the pads.

Do I need to register my workplace defibrillator?

Registration is not legally required but strongly recommended. Registering with The Circuit (managed by the British Heart Foundation) means the ambulance service can direct 999 callers to the nearest available AED, potentially saving critical minutes.

What happens if our defibrillator is used and needs new pads?

After any use, the electrode pads must be replaced before the device is returned to service. Most suppliers offer replacement pads as a standalone purchase. Check that a spare set is included in your workplace first aid plan so the AED can be made rescue-ready again immediately.