In 2026, workplace safety in the UK is no longer just about compliance; it is about building a resilient environment where employees feel protected. Under the Health and Safety (First-Aid) Regulations 1981, the legal responsibility remains clear: every employer must provide “adequate and appropriate” equipment, facilities, and personnel to ensure employees receive immediate attention if they are injured or taken ill at work.
However, the question “How many first aiders do I need at work?” doesn’t have a single, static answer. The Health and Safety Executive (HSE) requires you to conduct a First Aid Needs Assessment to determine the exact numbers for your specific site.
What are the Legal Requirements for First Aid in the Workplace UK?
The legal framework for 2026 mandates that all UK businesses, regardless of size, must have:
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A suitably stocked first aid kit: Tailored to the risks identified in your assessment.
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An appointed person or trained first aider: Someone available at all times when people are at work.
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Information for employees: Clear signage and induction training detailing who the first aiders are and where equipment is located.
Failing to meet these requirements doesn’t just risk employee safety, it opens your business to HSE prosecution, heavy fines, and significant reputational damage.
Determining Your Requirements: The Risk Categories
To calculate your needs, you must first categorise your workplace into Low Hazard or Higher Hazard.
1. Low-Hazard Workplaces
These include offices, shops, and libraries where the risks are minimal (e.g., trips, falls, or minor cuts).
| Number of Employees | Minimum First Aid Requirement |
| Fewer than 25 | At least one Appointed Person. |
| 25 – 50 | At least one first aider trained in Emergency First Aid at Work (EFAW). |
| More than 50 | At least one first aider trained in First Aid at Work (FAW) for every 100 people. |
2. Higher-Hazard Workplaces
These include construction sites, chemical plants, manufacturing, and warehouses where machinery or hazardous substances are present.
| Number of Employees | Minimum First Aid Requirement |
| Fewer than 5 | At least one Appointed Person. |
| 5 – 50 | At least one first aider trained in EFAW or FAW (depending on risks). |
| More than 50 | At least one first aider trained in FAW for every 50 people. |
How Many First Aiders Do I Need for My Business? (The Needs Assessment)
While the tables above provide a baseline, your First Aid Needs Assessment must account for real-world variables. In London’s fast-paced business environment, a “one size fits all” approach often falls short of HSE expectations.
Factors that Increase Your Required Numbers:
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Shift Patterns and Out-of-Hours Work: If your business operates 24/7 or has evening cleaners, you must ensure a first aider is present for every shift. You cannot count a first aider who is only on-site from 9 am to 5 pm if staff are working until 10 pm.
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Holiday and Sickness Cover: HSE guidelines are strict: cover must be available at all times. This means you need a “buffer” of trained staff to account for planned leave or unexpected illness.
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Site Layout and Multiple Floors: In multi-storey London office blocks, having one first aider on the ground floor may not be “adequate” for a cardiac arrest on the 10th floor. Ideally, aim for coverage on every floor or distinct building.
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Remote or Lone Workers: If you have delivery drivers or site inspectors, they require personal first aid kits and a reliable means of communication.
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Proximity to Emergency Services: If your site is in a remote area or a highly congested part of London where ambulance response times might be delayed, you should consider higher levels of training (FAW) and perhaps an Automated External Defibrillator (AED).
Expert Tip: Don’t forget non-employees. While the law focuses on your staff, the HSE strongly recommends including members of the public, contractors, and visitors in your assessment, especially for retail or hospitality businesses.
Appointed Person vs. EFAW vs. FAW: What’s the Difference?
Understanding the hierarchy of training is vital for your 2026 compliance strategy.
The Appointed Person
This role does not require formal first aid training. Their duty is to take charge of first aid arrangements, look after the first aid equipment (restocking kits), and call emergency services. They are the minimum requirements for very small, low-risk teams.
Emergency First Aid at Work (EFAW)
A 1-day course designed for low-risk environments. It covers life-saving skills such as CPR, dealing with choking, severe bleeding, and unconscious casualties. This is the gold standard for small London offices.
First Aid at Work (FAW)
A 3-day comprehensive course. It includes everything in EFAW plus training for a wider range of injuries and illnesses, such as bone/joint injuries, chest injuries, and suspected spinal damage. This is mandatory for higher-risk sites or larger workforces.
Mental Health First Aid: The 2026 Standard
In recent years, the HSE has clarified that employers should consider mental health as part of their first aid needs assessment. While not yet a strict “1 first aider per X employees” rule, failing to provide mental health support can be seen as a failure in your duty of care.
Many London businesses are now training “Mental Health First Aiders” to identify signs of stress, anxiety, and depression, providing a vital first point of contact before professional help is sought.
Maintaining Your Compliance Checklist
Being “compliant” isn’t a one-time event. To stay within UK HSE guidelines throughout 2026, follow this maintenance schedule:
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Monthly Kit Checks: Ensure no items have expired. Sterile dressings and eye pads have “use-by” dates.
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Annual Skills Refresher: First aid skills fade. The HSE highly recommends a half-day annual refresher for all trained staff.
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Three-Year Requalification: EFAW and FAW certificates expire after three years. Track these dates and book requalification courses at least three months in advance.
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Update Signage: If a first aider leaves the company, remove their name from the posters immediately and appoint a replacement.
Practical First Aid: Your London Partner in Compliance
At Practical First Aid, we understand that navigating HSE regulations can be daunting for business owners. Whether you are a small startup in Shoreditch or a large construction firm in Croydon, we provide the expert training you need to stay legal and keep your team safe.
Our courses are designed to be engaging, hands-on, and fully compliant with the latest 2026 HSE standards. We offer:
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On-site training at your London premises.
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Public courses at our accessible training centres.
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Bespoke advice on your First Aid Needs Assessment.
Don’t wait for an accident to find out you’re understaffed. Ensuring you have the right number of first aiders is the single most important step you can take for your workplace safety this year.
