Risk Assessment · UK edition

How to Write a Risk Assessment in the UK (Step-by-Step Guide)

A complete, plain-English walk-through of writing a UK risk assessment that meets HSE expectations. Includes the five steps, a worked example, common mistakes, and the exact records you should keep.

How to Write a Risk Assessment in the UK (Step-by-Step Guide)
TL;DR: A UK risk assessment must identify hazards, decide who is harmed and how, evaluate risks, record the significant findings (if you employ five or more people), and be reviewed regularly. Use the HSE five-step approach. This guide walks you through each step with a worked example for a small business.

Why this matters

Under the Management of Health and Safety at Work Regulations 1999 (MHSWR), every UK employer and self-employed person must carry out a "suitable and sufficient" risk assessment of the workplace risks faced by their employees and anyone else affected by their work. The Health and Safety Executive (HSE) is the regulator that enforces this duty in Great Britain.

Failing to carry out a proper risk assessment is one of the most common reasons businesses receive enforcement notices, refuse-to-work orders, or get marked down on tenders and pre-qualification questionnaires. The good news: writing one is genuinely straightforward once you understand the structure.

The five-step HSE approach

Step 1 — Identify the hazards

A hazard is anything with the potential to cause harm: chemicals, electricity, working at height, manual handling, slips and trips, lone working, noise, dust, machinery, hot surfaces, traffic on site, fatigue, violence and aggression. Walk the workplace, talk to the people doing the work, look at past incidents and near misses, and check manufacturer data sheets and guidance.

If you'd rather not start from a blank page, our free UK risk assessment template gives you a structured starting point with the right column headings.

Step 2 — Decide who might be harmed and how

For each hazard, list who could be affected and the way they could be harmed. Don't just write "everyone". Be specific: employees, contractors, agency workers, members of the public, visitors, drivers, young workers, new and expectant mothers, lone workers, and people with disabilities all face different risks.

Step 3 — Evaluate the risk and decide on controls

Risk is a combination of likelihood and severity. The simplest scoring system is a 5×5 matrix: rate likelihood 1–5, rate severity 1–5, multiply for a risk score 1–25. Anything 12+ usually needs strong controls before work proceeds.

A 5x5 risk assessment matrix grid showing a green-amber-red colour gradient, with likelihood increasing from left to right and severity increasing from bottom to top.
A standard UK 5×5 risk matrix: likelihood (1–5) along the horizontal axis, severity (1–5) up the vertical axis. Multiply the two for a risk score between 1 and 25 — green is broadly acceptable, amber needs further controls, red usually means stop and rethink.

Apply the hierarchy of controls in order:

  1. Eliminate the hazard altogether (the best control).
  2. Substitute with something less hazardous.
  3. Engineering controls — guards, barriers, ventilation, isolation.
  4. Administrative controls — training, supervision, safe systems of work, signage.
  5. PPE — gloves, helmets, harnesses, goggles. Always the last line of defence.

Step 4 — Record the significant findings

If you have five or more employees, you must record the significant findings in writing. The record should include the hazard, who is affected, existing controls, the residual risk score, any further actions needed, who is responsible, and the deadline.

The easiest way to do this in 2026 is digitally — paper templates get lost, become outdated, and look unprofessional. Our UK risk assessment software generates a fully formatted PDF that's ready to share with clients, contractors, or the HSE.

Step 5 — Review and update

Review your risk assessment at least annually, after any incident or near miss, when work practices change, after new equipment is introduced, or when new staff start. A risk assessment that hasn't been touched in three years is one of the first red flags an inspector or auditor will spot.

A worked example: a small office

Let's take a small UK office with eight employees. Hazards likely to appear:

That single example covers about half of what most small office risk assessments need to record.

Common mistakes UK businesses make

Records you should keep alongside the assessment

If you're working as a contractor, the principal contractor or client will often ask for these alongside the risk assessment itself before letting you on site.

How specific does it need to be?

"Suitable and sufficient" is the legal test. In practice, that means the assessment is proportionate to the risks involved, takes account of all relevant hazards, and considers everyone who might be affected. A small office cleaning service might have a single 3-page assessment. A construction site under CDM 2015 needs activity-specific assessments and method statements for every significant task.

A useful sanity check: read your assessment as if you were an HSE inspector visiting tomorrow. Does it describe your workplace, or could it have been written for any business in the country? If it's the second, it isn't suitable and sufficient.

Special groups to think about explicitly

Writing your first one through a guided workflow

If you want to skip the blank page entirely, our free UK risk assessment generator asks you a few questions about your trade and produces a fully structured draft you can edit and download. It uses HSE-referenced hazards and controls so you start from a sensible baseline rather than guessing.

Reviewing in practice

Set a calendar reminder for the annual review and treat it as a 30-minute task: open the assessment, walk the floor, talk to two or three of the people doing the work, and update anything that has changed. Trigger an out-of-cycle review whenever you change a process, bring in new equipment, hire new people, or have a near miss. The point isn't to rewrite the document — it's to keep it honest.

Final word

A risk assessment isn't paperwork for paperwork's sake. Done well, it makes your people safer, lowers your insurance costs, wins you tenders, and gives you a defence if something does go wrong. Done badly — or not at all — it leaves you exposed both legally and operationally.

Ready to write yours?

Register interest in Assessment First and we’ll confirm current availability for the appropriate risk-assessment workflow.

Related articles