Using MEWPs Safely — Cherry Pickers, Scissor Lifts and the Law for Trade Businesses (2026)

What Counts as a MEWP and the Main Types

A MEWP is any machine that lifts a person on a platform to a working position and then lets them work from that platform. The platform is the workplace — unlike a crane, where the load is the point. There are three broad families you'll come across on UK sites and in hire-company yards.

Scissor Lifts (Vertical)

A scissor lift raises a large platform straight up on a folding criss-cross mechanism. It only goes up and down — there is no outreach — so it's ideal for indoor work, warehouse maintenance, ceiling and lighting jobs, and flat-floor external work where you can position the machine directly beneath the task. Working heights typically run from around 6m up to 18m or more. Because the base is wide and the lift is purely vertical, scissor lifts are stable and simple to operate, but they need a firm, level surface and are far more sensitive to ground gradient and floor loadings than people assume.

Boom Lifts and Cherry Pickers (Articulated or Telescopic)

Boom-type MEWPs put the platform on the end of an extending or articulating arm. A telescopic boom ("stick boom") extends in a straight line for maximum reach; an articulated boom (the classic "cherry picker") has knuckle joints that let you reach up, over and around obstacles. These machines give you outreach as well as height, which is what makes them invaluable for tree work, external building maintenance, steelwork and anywhere you can't park directly under the job. The trade-off is that outreach moves the load away from the base, which is the single biggest cause of overturning, and the whipping movement of a long boom is what throws operators against structures or out of the basket.

Vehicle and Trailer-Mounted Platforms

Vehicle-mounted platforms are booms built onto a van or truck chassis (think the units used by highways, telecoms and arborists), while trailer-mounted platforms are towable units you can pull behind a pickup and set up on outriggers. Both are popular with smaller trade businesses because you can own one without a dedicated transport solution. They almost always rely on outriggers (stabiliser legs) for stability, so ground conditions and correct deployment are critical.

The Legal Framework — Three Sets of Regulations

Operating a MEWP in the UK isn't governed by a single "MEWP law". Three regulations stack on top of each other, and you need to satisfy all three.

Work at Height Regulations 2005

This is the headline duty. The Work at Height Regulations 2005 apply to all work at height where there is a risk of a fall liable to cause personal injury. They set out the well-known hierarchy of control: avoid work at height where you reasonably can, prevent falls where work at height is unavoidable (this is where a MEWP comes in, as collective fall prevention), and mitigate the consequences of a fall where the risk remains. The regulations also require that all work at height is properly planned, appropriately supervised, and carried out by competent people using suitable equipment. A MEWP is usually the "prevent" option that justifies not using a ladder or a scaffold — but only if it's the right machine, properly selected for the task.

PUWER 1998

The Provision and Use of Work Equipment Regulations 1998 (PUWER) require that work equipment is suitable for the task, safe to use, properly maintained and inspected, and used only by people who have received adequate information, instruction and training. For a MEWP this means selecting the correct machine for the environment and load, keeping it in good order, and making sure operators actually know how to use that specific class of machine.

LOLER 1998

Because a MEWP lifts people, it falls under the Lifting Operations and Lifting Equipment Regulations 1998 (LOLER). The key obligation for trade businesses is the thorough examination: equipment used to lift people must have a thorough examination by a competent person at least every 6 months (more frequently if the examination scheme or risk assessment requires it). This is separate from, and in addition to, routine inspections and the daily pre-use checks. Records of the thorough examination must be kept, and a MEWP that's out of examination date should not be used — if you hire machines in, check the report before the operator gets in the basket.

Operator Competence — IPAF and the PAL Card

"Competent people" is a legal requirement, not a nicety. The recognised route to operator competence in the UK is IPAF (the International Powered Access Federation) training, which on successful completion issues a PAL Card (Powered Access Licence). The PAL Card is category-specific — it certifies the holder to operate particular classes of machine, not MEWPs in general — and it's typically valid for five years before renewal. The main categories you'll see on a card are:

• 1a — Static Vertical: vertical-only machines on a fixed/outrigger base (e.g. a push-around or trailer-mounted vertical lift).
• 1b — Static Boom: boom-type machines on a fixed/outrigger base, such as a trailer or vehicle-mounted cherry picker set up on stabilisers.
• 3a — Mobile Vertical: self-propelled vertical machines that drive at height — the classic scissor lift.
• 3b — Mobile Boom: self-propelled boom machines — articulated and telescopic self-driving cherry pickers.

Make sure the category on the operator's card actually matches the machine they're about to use. A 3a card holder is not certified to operate a 3b boom lift, and putting them up in one would leave you exposed on both competence and insurance. Many businesses also train a supervisor or manager under IPAF's management course so there's someone responsible for safe planning who understands the kit.

Pre-Use Checks Before Every Shift

A daily pre-use check is a basic operator duty under PUWER and takes only a few minutes. It does not replace the LOLER thorough examination or scheduled inspections — it sits alongside them. Walk the machine and confirm:

• No visible damage, leaks (hydraulic oil, fuel) or loose components
• Tyres/tracks in good condition and correctly inflated where applicable
• Controls operate smoothly from both ground and platform positions
• Emergency lowering / auxiliary descent system works — test it
• The emergency stop functions
• Guardrails, gates and toe boards are present and secure
• The anchor point(s) for harnesses are present and undamaged on boom machines
• The rated capacity / data plate is legible, and the planned load is within it
• Battery charge or fuel level is sufficient for the task

Record the check. If anything fails, the machine is out of service until it's put right — don't "make do". A failed emergency lowering system, in particular, is a serious finding because it's your route out if someone is trapped at height.

Ground Conditions, Outriggers and Stability

The ground a MEWP stands on is just as important as the machine itself. Most overturns trace back to a soft, sloping or hidden-void surface rather than a mechanical fault. Before setting up:

• Check the ground is firm and level, and within the machine's permitted gradient.
• Watch for hidden hazards: drain covers, manhole lids, soft verges, recently backfilled trenches, basements, cellars and underground services that could collapse under point loading.
• Use spreader pads under outriggers to distribute the load — outrigger feet concentrate enormous force into a small area.
• Deploy all outriggers fully and confirm the machine's level/stability indicators before lifting.
• Keep a safe distance from excavations, edges and slopes.
• Never override or bypass interlocks, tilt sensors or load-sensing cut-outs.

With a boom lift, remember that reaching out moves the platform load away from the base and reduces stability — work within the machine's charted envelope, not at the edge of it.

The Major Risks and How to Control Them

Industry data, including HSE incident records and IPAF's own accident reporting, consistently points to a small number of failure modes that cause the majority of serious MEWP injuries.

• Overturning: caused by ground failure, overloading, working outside the envelope, or driving at height over uneven surfaces. Controlled by correct ground assessment, outriggers, load limits and route planning.
• Entrapment and crushing: the operator is pushed against an overhead beam, structure or pipework by the platform's own movement, often crushing them against the controls. This is the headline killer with boom lifts. Controlled by careful positioning, slow controlled movements, awareness of overhead structures, and secondary guarding/sensing systems on many modern machines.
• Falls from the platform: the operator is thrown out by a boom whip, or climbs/leans out of the basket. Controlled by keeping feet on the platform floor, never sitting or climbing on guardrails, and wearing a harness in boom machines.
• Being struck — and struck by: people, vehicles or plant below the machine, or the machine itself contacting overhead power lines or structures. Controlled by exclusion zones, banksmen, segregation from traffic and overhead service surveys.

Harness Use in Boom-Type MEWPs

In a boom-type MEWP (categories 1b and 3b), the recognised UK best practice — set out by IPAF and the Strategic Forum for Construction's work at height guidance — is to wear a full-body harness with a short restraint (work-positioning) lanyard, clipped to the manufacturer's designated anchor point inside the platform. The lanyard is deliberately short. Its job is restraint — to stop you being catapulted out of the basket if the boom whips or jolts — not fall arrest. You should not be able to get into a position where you could fall any meaningful distance.

A harness is generally not required in a scissor lift under normal conditions, because there's no boom to throw the operator and the guardrails provide collective protection — though always follow the manufacturer's instructions and your own risk assessment. Clip only to the designated anchor inside the platform, never to an adjacent structure, and inspect the harness and lanyard before each use.

Rescue Plans for Entrapment

Every MEWP operation must have a rescue plan in place before work starts — this is a planning requirement, not an afterthought. If an operator is trapped, crushed or incapacitated at height, you cannot simply "wait for the fire brigade" as your only plan. A workable rescue plan covers:

• A trained ground person who knows how to operate the machine's ground controls and emergency lowering / auxiliary descent system to bring the platform down.
• Clear communication between platform and ground at all times.
• Procedures for suspension trauma awareness if anyone ends up in their harness.
• The means to summon the emergency services as a backup, with the site address and access details ready.

Never operate a MEWP with a single person on site and nobody at ground level who can bring them down. Lone working in a boom lift, with no ground rescue, is one of the most dangerous things a small trade business can do.

Exclusion Zones and Weather Limits

Set up an exclusion zone beneath and around the working area to keep pedestrians, other workers and vehicles clear of dropped tools, materials and the swing of the boom. Use barriers, cones and signage, and a banksman where there's traffic or poor sightlines. On the public highway or near it, you'll also need traffic management.

Wind is a hard limit. Every MEWP rated for outdoor use has a maximum safe wind speed on its data plate — commonly around 12.5 m/s (roughly 28 mph, Beaufort force 6), but check the specific machine because some are lower. Measure wind speed at the working height with an anemometer, not at ground level, because it's significantly stronger up top. Large boards, sheets or panels act as sails and dramatically increase the effective load on the machine, so reduce limits accordingly. Stop work and lower the platform if wind approaches the limit, and don't use a MEWP rated for indoor use only outdoors at all. Lightning, ice and heavy rain affecting grip and visibility are all grounds to stop.

Hiring vs Owning — Practical Notes for Trade Businesses

For occasional work at height, hiring is almost always the right call: you get a recently examined machine, you're not tying up capital, and the hire company handles the LOLER thorough examination and maintenance. When you hire, confirm the machine is in current thorough-examination date (ask to see the report), match the machine category to your operators' PAL cards, and read the data plate for capacity and wind limits. A familiarisation on the specific model is sensible even for a carded operator, as controls differ between manufacturers.

If you own machines, you take on the LOLER 6-monthly thorough examination, scheduled inspections and maintenance under PUWER, plus storage and transport. Owning only pays off with regular, predictable high-level work. Either way, keep your paperwork — pre-use checks, thorough examination reports, operator PAL cards and rescue plans — organised and current. If the HSE turns up after an incident, the documentation is the first thing they'll ask for.

Quick Reference: MEWP Types, IPAF Categories and Examination