Fall Arrest and Work Restraint Systems for UK Trades 2026 — A Compliance Guide

Where Personal Systems Sit in the Hierarchy

The Work at Height Regulations 2005 set out a clear hierarchy of control. You must work through it in order, and only drop to the next level when the one above is not reasonably practicable. The HSE expects you to be able to justify why you didn't use a higher-level measure.

• Avoid working at height altogether where you can — assemble at ground level, use long-reach tools, design the task out.
• Prevent falls using collective protection first (guardrails, edge protection, fully boarded scaffolds, MEWPs) and only then personal protection.
• Minimise the distance and consequences of a fall where it cannot be prevented — this is where fall arrest lives.

The key principle is collective before personal, and prevention before arrest. A guardrail protects everyone on the platform without anyone having to clip on, remember a procedure or be trained. A harness only protects the one person wearing it correctly. So personal fall protection is never your first choice — it is what you reach for when the collective options genuinely can't be made to work for that specific task. Edge protection and general working-at-height duties are covered in more depth in our other articles; this one focuses on the personal, PPE-based systems at the bottom of the hierarchy.

Work Restraint vs Fall Arrest — The Difference That Matters

These two are constantly confused on site, and the confusion is dangerous. They are not the same system, they don't protect you the same way, and one is strongly preferred over the other.

Work restraint keeps you away from the edge entirely. The lanyard is set short — and the anchor positioned — so that you physically cannot reach the point from which you could fall. You are tethered like a dog on a lead that won't reach the road. Because you never get to the edge, no fall ever happens. There is no shock load, no fall distance to calculate, no risk of dangling in a harness. Restraint is always the preferred personal option because it prevents the fall rather than stopping it mid-flight.

Fall arrest is fundamentally different. It allows you to reach a position where you can fall, and then stops you once the fall is in progress — before you hit the ground. It involves a genuine fall, real shock loading on your body and the anchor, and the very real problem of what happens to you while you hang there waiting to be rescued. Fall arrest is only used where restraint isn't possible because the task requires you to be at or beyond the fall edge.

The practical takeaway: always try to engineer the job as restraint first. Reposition the anchor, shorten the lanyard, change where the operative stands. Only accept fall arrest when the task genuinely cannot be done from a restrained position.

Components of a Fall Arrest System

A personal fall arrest system is only as strong as its weakest part, and a single missing or wrong component makes the whole thing unsafe. Treat it as a complete system, not a collection of bits pulled from the back of the van.

• Full body harness: distributes arrest forces across the thighs, pelvis, chest and shoulders. Never use a sit harness or work-positioning belt for arrest — a belt can cause fatal internal injury when it stops a fall. The attachment point is the dorsal (rear) D-ring, or sometimes a front sternal point.
• Energy-absorbing lanyard: a lanyard with a tear-webbing pack or shock absorber that deploys to limit the peak force on your body to a survivable level. A fixed lanyard with no absorber transmits the full shock load and is not suitable for arrest. Self-retracting lifelines (inertia blocks) do the same job with a shorter fall distance.
• Connectors: karabiners and hooks rated for the loads, with self-closing, self-locking gates. Avoid "roll-out" by using the right connector for the right anchor and never clipping gate-to-gate.
• Anchor point: a point rated to take the loads a fall generates — typically an eyebolt, a mansafe or horizontal lifeline system, a mobile/temporary anchor, or a tested structural point. The anchor is the most commonly overlooked and most commonly inadequate part of the whole setup.

Anchor Strength and Position

The anchor is where most fall arrest setups fail in practice. A scaffold tube clamp, a bit of handrail, a vent pipe or a random fixing "that looks strong enough" is not an anchor. Personal fall protection anchors should be capable of taking the forces a fall generates with an appropriate factor of safety, and a fixed anchor such as a class A eyebolt should be installed and tested to the relevant standard.

Position matters as much as strength. Wherever possible, anchor above the operative — ideally overhead. The higher the anchor, the shorter the potential fall and the lower the shock load. An anchor at or below foot level allows a much longer, more violent fall and dramatically increases the clearance you need below. As a rule: anchor high, keep the lanyard taut, and minimise the slack you have to fall through.

Fall Factors and Clearance Below

The fall factor describes how far you fall relative to the length of your lanyard. Anchoring overhead with a taut lanyard gives a low fall factor and a gentle arrest. Anchoring at foot level with slack gives a high fall factor — a longer free fall and a far harsher, potentially injurious arrest even when the system holds.

Just as important is clearance below. When a fall is arrested, you keep moving down while the energy absorber deploys and the system stretches. You need enough clear space beneath you so that you stop before hitting the ground, a lower floor, scaffold, or any obstruction. The total clearance you must allow includes the lanyard length, the deployment of the energy absorber, the height of the worker, and a safety margin. On low-level work — a single-storey roof, a mezzanine, work above a fragile lower roof — there is often simply not enough clearance for fall arrest to work, which is another reason restraint or collective measures must be used instead.

Suspension Trauma and the Legal Need for a Rescue Plan

This is the part trades skip most often, and it is a legal must. When fall arrest works as intended, the person is left hanging in their harness. Suspension trauma — also called suspension intolerance or orthostatic intolerance — can set in within minutes. Motionless suspension causes blood to pool in the legs, reducing the volume returning to the heart and brain. The casualty can lose consciousness and the situation can become life-threatening quickly, even though the fall itself caused no injury.

You cannot rely on calling 999 and waiting. An emergency response can easily take longer than a suspended person can safely tolerate, and fire and rescue may not be able to reach the casualty at height immediately. The law requires you to plan for emergencies and the rescue of any person who has fallen — that means you need a rescue plan in place before work starts, with the equipment and trained people to recover a suspended worker fast.

• A practical, written rescue plan specific to the location and access route.
• Rescue equipment on site — a rescue/descent kit, recovery pole or appropriate MEWP — not just a phone.
• People trained and competent to carry out the rescue, available during the work.
• Suspension trauma relief straps fitted so a casualty can take weight off their legs while waiting.
• A way to summon help and a plan for monitoring the casualty until recovered.

If your rescue plan is "we'll call the fire brigade," you do not have a rescue plan. Detailed harness inspection procedure is covered separately; here the point is that the rescue capability is part of the system, not an afterthought.

Inspection — The LOLER and PUWER Angle

Fall protection equipment is work equipment, and where it is used to lift, lower or suspend a person it is also lifting equipment. That brings two sets of duties into play. PUWER requires work equipment to be suitable, maintained and inspected; LOLER adds duties around lifting equipment used by people, including periodic thorough examination at defined intervals.

• Pre-use checks: the operative inspects the harness, lanyard, connectors and anchor before each use — looking for cut or frayed webbing, deployed absorbers, corroded or distorted hardware, faulty gates and missing or illegible markings.
• Periodic thorough examination: a competent person formally examines the equipment at set intervals (commonly every 6 to 12 months for personal fall protection, more often in harsh conditions), and records it.
• Post-incident: any harness or lanyard that has arrested a fall is removed from service immediately and not used again.
• Competence and training: operatives must be trained to select, fit, use and check the equipment, and to follow the rescue plan. Competence is a legal requirement, not a nice-to-have.

Fall Arrest System Component Checklist

Recording It All

None of this protects you — or your business — unless it is recorded. If something goes wrong, the HSE and your insurer will ask for the paperwork, and "we always do it properly" with nothing written down is not a defence. Keep records that tie the equipment, the people and the task together.

• Risk assessment and method statement showing why personal protection was used and which higher measures weren't practicable.
• The written rescue plan for the job.
• Equipment register with unique IDs, inspection dates and thorough examination certificates.
• Pre-use check records and any defects found and acted on.
• Training and competence records for each operative.
• Anchor installation and test certificates for fixed anchors and lifelines.

Keeping this straight across multiple jobs, vans and operatives is exactly the kind of admin that gets dropped on a busy week. Logging equipment, inspection dates and per-job documents in one place — rather than across glove boxes and lost paperwork — is what turns "we do it properly" into something you can actually prove.