UK health and safety law is not a single rule book that every business follows in the same way. Instead, it’s a layered system: the Health and Safety at Work etc. Act 1974 (HSWA) sets out broad duties that apply to almost every employer, while dozens of more specific regulations — made under that Act — only apply depending on what your business actually does. Many owners and managers assume that because they have done a general risk assessment, they are covered. In practice, working out your full legal obligations means looking closely at your activities, equipment, premises and workforce, not just your industry label.
This article walks through the main factors that determine which UK regulations apply to your business, so you can build an accurate picture of your legal duties rather than relying on guesswork.
Start with the general duties under HSWA 1974
The Health and Safety at Work etc. Act 1974 is the foundation of UK health and safety law. It places a general duty on employers to ensure, so far as is reasonably practicable, the health, safety and welfare of their employees, and to protect others — such as contractors, visitors and the public — who may be affected by their work. The Act also places duties on the self-employed and on those in control of premises.
HSWA rarely tells you exactly what to do in a given situation. Instead, it is supported by a wide range of secondary legislation — mostly Statutory Instruments enforced by the Health and Safety Executive (HSE) or your local authority — that add specific, practical requirements. Identifying which of these regulations apply to you depends on several interacting factors.
Factor 1: The nature of your work activities
The single biggest driver of applicability is what your business actually does day to day. UK regulations are often built around specific hazards or types of work, meaning two businesses in the same broad sector can have quite different legal obligations depending on the tasks involved. Common examples include:
- Work at height — triggers the Work at Height Regulations 2005 (WAHR)
- Manual handling of loads — triggers the Manual Handling Operations Regulations 1992 (MHOR)
- Use of display screen equipment (DSE) — triggers the Health and Safety (Display Screen Equipment) Regulations 1992
- Work in confined spaces — triggers the Confined Spaces Regulations 1997
- Noise or vibration exposure — triggers the Control of Noise at Work Regulations 2005 and the Control of Vibration at Work Regulations 2005
- Working with asbestos — triggers the Control of Asbestos Regulations 2012
Each of these activities brings its own dedicated regulations into scope, separate from the general HSWA duties.
Factor 2: The substances and materials you work with
If your business handles chemicals, dust, fumes, biological agents or other hazardous substances, the Control of Substances Hazardous to Health Regulations 2002 (COSHH) is likely to apply — regardless of your sector. This is not limited to obviously “industrial” settings; hairdressers, cleaners, print shops, laboratories and even offices using certain equipment can fall within scope. Applicability depends on the substance itself, how it is used and stored, and the level of exposure risk — not on your business type. Where lead or asbestos are involved specifically, separate dedicated regulations apply on top of COSHH.
Factor 3: Equipment and machinery in use
The Provision and Use of Work Equipment Regulations 1998 (PUWER) generally applies wherever machinery, tools or equipment are used for work — from industrial plant to a simple stepladder or a piece of office equipment. Where lifting equipment is involved (hoists, forklifts, lifts), the Lifting Operations and Lifting Equipment Regulations 1998 (LOLER) also applies, and pressure systems bring in the Pressure Systems Safety Regulations 2000. The trigger here is the presence and use of the equipment itself, not the sector you operate in.
Factor 4: Your premises and how they are used
The type of premises you occupy, and how they are used, brings separate legislation into play:
- Fire safety is governed by the Regulatory Reform (Fire Safety) Order 2005, which applies to almost all non-domestic premises and places duties on the “responsible person”
- General workplace conditions — ventilation, temperature, lighting, welfare facilities — fall under the Workplace (Health, Safety and Welfare) Regulations 1992
- Construction work brings in the Construction (Design and Management) Regulations 2015 (CDM), which apply from the smallest domestic extension through to major infrastructure projects
A business operating from a warehouse, a shop, a construction site or a shared office block may each face different obligations relating to the physical environment, even where their core work activity is otherwise similar.
Factor 5: The size and structure of your business
Some duties scale with headcount. Under the Management of Health and Safety at Work Regulations 1999, employers with five or more employees must record significant findings of their risk assessments in writing and have a written health and safety policy. Businesses below that threshold still carry the same underlying legal duty to manage risk — they simply have lighter documentary requirements. Separately, if you employ anyone, you are generally required to hold Employers’ Liability Insurance under the Employers’ Liability (Compulsory Insurance) Act 1969, with limited exemptions.
Factor 6: Who is affected by your work
UK legislation does not only protect your direct employees. HSWA and related regulations also require you to consider contractors, visitors, and members of the public affected by your activities. This is particularly relevant if you:
- Invite the public onto your premises (retail, hospitality, leisure)
- Send staff to work on other organisations’ sites
- Manage shared workspaces where multiple employers’ activities interact
The Reporting of Injuries, Diseases and Dangerous Occurrences Regulations 2013 (RIDDOR) also applies broadly here — requiring certain injuries, diseases and dangerous occurrences to be reported to the HSE, regardless of whether the person affected was an employee.
Factor 7: Your sector-specific regulatory regime
Certain industries carry their own dedicated regulatory frameworks layered on top of general health and safety law, including:
- Construction — CDM Regulations 2015
- Agriculture — regulations covering machinery guarding, livestock handling and pesticides
- Food businesses — food hygiene regulations sit alongside (not instead of) health and safety law
- Healthcare — additional infection control and clinical waste regulations
- Transport and logistics — drivers’ hours rules and vehicle-specific regulations
These sector-specific rules typically sit alongside general legislation like HSWA and the Management Regulations, rather than replacing them.
Factor 8: Enforcement authority and regional variation
In Great Britain, enforcement is split between the HSE (typically for higher-risk sectors like construction, manufacturing and agriculture) and local authorities (typically for offices, retail and hospitality) — it is worth knowing which applies to your business, as this affects who you report incidents to and who may inspect your premises. Note also that Northern Ireland has its own health and safety legislative framework, enforced by the Health and Safety Executive for Northern Ireland (HSENI), which mirrors but is legally separate from GB law. Businesses operating across the UK should check they are not assuming GB regulations automatically extend to Northern Ireland.
Putting it together: a practical approach
Rather than trying to memorise every regulation that might apply, it is more effective to map your business against these factors systematically:
- List your work activities — every task carried out by staff, not just the “main” job.
- List the substances, equipment and materials involved in each activity.
- Map your premises types and how each is used, including shared or third-party sites.
- Check your headcount against the five-employee threshold for written documentation.
- Identify who else is affected — contractors, visitors, the public.
- Check for sector-specific regimes relevant to your industry.
- Confirm your enforcing authority (HSE or local authority) and whether Northern Ireland rules apply.
Working through this list will usually surface a shortlist of applicable regulations that goes well beyond HSWA’s general duties alone. Because legislation is periodically updated, it is worth revisiting this exercise whenever your activities, premises or workforce change significantly — and consulting a qualified health and safety adviser or solicitor if you are uncertain how a specific regulation applies to your circumstances.
Getting this right is not just about compliance for its own sake. Understanding exactly which legislation applies to your business is the foundation for building risk assessments, policies and training that address the hazards your people actually face — rather than a generic checklist that misses what matters most.
Determining which legislation is applicable in your business can be complicated and time consuming, although the Health and Safety Executive acknowledges that businesses need to identify the laws relevant to their particular industry and activities.
We identify the health & safety legislation relevant to your specific activities and produce a bespoke legislation register. We can also provide a regular update service so that you can focus on running your business. If you would like a quotation or more information about the services we offer, please contact us.