Anchor Point
A secure point of attachment for a lanyard or fall protection system. Anchor points must be strong enough to hold a falling person and should be identified before work begins.
UK working at heights reference guide
29 defined terms
Working at Heights Terms and Glossary.
A comprehensive A to Z reference for working at heights terminology used across UK workplaces. Learn the language of safe planning, fall prevention, access equipment, harness systems and rescue.
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Reference edition
Every working at height term you need, clearly defined.
From MEWP and fall arrest to guardrails, toe boards and rescue plans, built for UK learners, trainers and employers.
- 29 essential defined terms
- Organised A to Z for quick reference
- Aligned with WAHR 2005 and UK practice
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29
Working at heights terms defined
13
Alphabetical sections
WAHR
2005 aligned terminology
UK
Workplace reference
How to use this glossary
The vocabulary every working at height learner should know.
Work at height has a specialist vocabulary. Equipment terms such as MEWP, guardrail and toe board, protection concepts like fall arrest and fall restraint, and regulatory language around WAHR 2005 all appear in the UK working at height training environment.
This glossary collects the most important terms in one place, with clear, plain language definitions aligned to current UK regulations and workplace practice.
Use this page as a quick reference while you work through the Working at Heights Course, prepare a risk assessment, or brief a team before a job at height.
Every definition here is used inside our accredited course and on our wider working at heights guides. Scroll below for the full A to Z list.
A to Z glossary
Working at heights definitions
Every essential working at heights term, grouped alphabetically for quick reference.
Letter A
Terms starting with A
Access Equipment
The general term for equipment used to reach a place of work at height, including ladders, stepladders, podium steps, tower scaffolds, scaffolding and MEWPs.
Letter C
Terms starting with C
Competent Person
Someone with the training, knowledge, skills and experience to carry out a task safely. Under WAHR 2005, work at height must be done by competent people or supervised by one.
Collective Protection
Protection that covers everyone in the work area without individual action, such as guardrails and working platforms. It always takes priority over personal protection like harnesses.
Letter E
Terms starting with E
Edge Protection
Physical barriers fitted at open edges - typically guardrails, mid-rails and toe boards - to stop people and materials falling from a roof, floor or platform.
Exclusion Zone
A marked area beneath or around work at height that people are kept out of, protecting them from falling tools, materials or debris.
Letter F
Terms starting with F
Fall Arrest
A system that stops a fall that has already started, usually a harness, energy-absorbing lanyard and anchor point. It is a last resort in the hierarchy of control and demands a rescue plan.
Fall Restraint
A system that physically prevents the wearer from reaching a position where a fall is possible, by limiting how far they can travel from the anchor point.
Fragile Surface
A surface that cannot safely take the weight of a person, such as rooflights, fibre cement sheets and corroded metal roofs. Falls through fragile surfaces are a major cause of death at work.
Letter G
Terms starting with G
Guardrail
A rigid horizontal rail fitted at the edge of a platform, roof or stairway to prevent falls. A standard arrangement includes a top rail, a mid-rail and a toe board.
Letter H
Terms starting with H
Harness
A full body harness distributes fall forces across the body and connects the wearer to a lanyard and anchor point. It needs user training, inspection and a rescue plan.
Hierarchy of Control
The WAHR 2005 order of priority: avoid work at height where possible, prevent falls where it cannot be avoided, and minimise the distance and consequences of a fall where risk remains.
HSE
The Health and Safety Executive, the national body responsible for enforcing workplace health and safety law in the UK and publishing guidance on safe work at height.
Letter L
Terms starting with L
Ladder Angle (1 in 4 Rule)
The correct setup angle for a leaning ladder: one unit out at the base for every four units of height, roughly 75 degrees. Too steep risks tipping back; too shallow risks the base sliding out.
Lanyard
The connecting line between a harness and an anchor point. Energy-absorbing lanyards are used for fall arrest; fixed-length lanyards are used for restraint and work positioning.
Letter M
Terms starting with M
MEWP
Mobile Elevating Work Platform - powered access equipment such as scissor lifts and boom lifts. Operating a MEWP requires specific practical training in addition to general awareness training.
Method Statement
A document describing how a job will be done safely, step by step. For work at height it typically covers the equipment, the sequence of work, supervision and emergency arrangements.
Letter P
Terms starting with P
Podium Steps
A small mobile platform with a guarded working position, used for low-level work indoors. They give a more stable, protected position than a stepladder for longer tasks.
PPE
Personal Protective Equipment. For work at height this can include a helmet with a chin strap, suitable footwear and, where the risk assessment requires it, a harness system.
Letter R
Terms starting with R
Rescue Plan
The pre-agreed arrangements for rescuing someone promptly after a fall, especially a person suspended in a harness. A fall arrest system without a rescue plan is incomplete.
Risk Assessment
The process of identifying hazards, deciding who could be harmed and how, and putting suitable controls in place. WAHR 2005 requires every task at height to be risk assessed.
Letter S
Terms starting with S
Scaffolding
A fixed temporary structure providing working platforms and access at height. Scaffolds must be designed, erected, altered and inspected by competent people.
Safe Working Load
The maximum load an item of equipment is rated to carry safely, marked by the manufacturer. Exceeding it on a platform, tower or MEWP can cause collapse or overturning.
Letter T
Terms starting with T
Toe Board
An upstand fixed at the base of a guardrail that stops tools, materials and feet slipping off the edge of a platform onto people below.
Three Points of Contact
The climbing rule for ladders: keep two hands and one foot, or two feet and one hand, in contact with the ladder at all times while climbing.
Tower Scaffold
A mobile aluminium tower with a guarded working platform. Towers must be assembled by trained people, used on firm level ground, and never moved with anyone on the platform.
Letter W
Terms starting with W
WAHR 2005
The Work at Height Regulations 2005, the primary UK legislation for work at height. They require work at height to be properly planned, appropriately supervised and carried out by competent people.
Work Positioning
A technique where a harness and lanyard hold a worker securely in position while their hands stay free to work, commonly used on towers, masts and structures.
Working Platform
Any surface from which work is carried out at height, such as a scaffold deck, tower platform, MEWP basket or podium. Platforms should have edge protection and be inspected before use.
Working at heights terminology explained in depth
Knowing the correct working at height vocabulary is more than an academic exercise. It is the difference between a confused team and one that can apply the Work at Height Regulations 2005 confidently on the roof, the warehouse floor or the building site.
The hierarchy: avoid, prevent, minimise
The single most important concept in this glossary is the hierarchy of control. Avoid work at height where you reasonably can. Where you cannot, prevent falls using collective protection such as guardrails, edge protection and working platforms. Only where risk remains do you minimise the consequences of a fall, with fall arrest as the last resort.
Restraint, arrest and the rescue plan
Fall restraint stops a fall from ever happening by limiting how far the wearer can travel. Fall arrest catches a fall that has already started using a harness, energy-absorbing lanyard and a sound anchor point. Whenever fall arrest is used, a rescue plan must be in place, because a person suspended in a harness needs to be recovered quickly.
Fragile surfaces and exclusion zones
A fragile surface - rooflights, fibre cement sheets, corroded decking - cannot take a person's weight and must be identified before work starts. Below the work, an exclusion zone protects other people from falling tools and materials, supported by toe boards on platform edges.
Paperwork that saves lives
A risk assessment identifies what could go wrong and how it will be controlled. A method statement sets out the safe sequence of work. And the competent person requirement in WAHR 2005 makes sure the people planning, supervising and doing the work actually have the knowledge to do it safely.
For the full practical application of these terms, see the safe working at height guide, or enrol in the Working at Heights Course to learn every concept in context.
FAQ
Working at heights terminology questions
The three questions we are asked most often about working at height vocabulary.
What is the difference between fall arrest and fall restraint?
Fall restraint stops you reaching a position where you could fall, by limiting how far you can travel from the anchor point. Fall arrest stops a fall that has already started, using a harness and energy-absorbing lanyard. Restraint is preferred because the fall never happens; arrest is a last resort and always needs a rescue plan.
What counts as a fragile surface?
A fragile surface is any surface that cannot reliably take a person's weight, such as rooflights, fibre cement roof sheets, glass and corroded metal decking. Falls through fragile surfaces are a major cause of workplace deaths, so they must be identified during planning and either avoided or protected.
What does the hierarchy of control mean for work at height?
It is the order of priority set by the Work at Height Regulations 2005. First avoid work at height where you can, for example by using extendable tools from the ground. Then prevent falls with guardrails and working platforms. Only where risk remains do you minimise the consequences of a fall, with fall arrest equipment as the last resort.
Working at Heights across the UK
Working at height training, wherever you work.
One online Working at Heights Course - CPD accredited, RoSPA assured and IIRSM approved - available in every UK city and every industry. Pass the assessment and your Working at Heights Certificate arrives the same day, valid for 3 years.
Looking for working at height training, a complete working at heights course, or an official working at heights certificate? You are in the right place. Study working at heights online in around 45 minutes, pass the 20 question assessment, and download your verifiable digital certificate the same day.
Renewing? The working at heights refresher course brings your knowledge of fall prevention and safe access right up to date. Curious how accreditation works? Our CPD accredited working at height course page explains CPD, RoSPA and IIRSM in plain language. And if you are starting from scratch, read what working at height actually means under the Work at Height Regulations 2005.
Working at heights courses in every major UK city
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Working at height training for every UK industry
The same Working at Heights Course, grounded in the real tasks people do at height, from healthcare estates to heavy industry.
Healthcare estates
Working at height training for hospital estates and maintenance teams who use ladders, podiums and MEWPs for lighting, ceilings and building repairs across NHS and private sites.
Warehousing & logistics
Fall prevention awareness for warehouse staff working from ladders, order pickers and mezzanines, and for teams maintaining high racking in distribution centres.
Retail & supermarkets
Working at heights certificates for shopfitters and store maintenance teams using stepladders and podiums for signage, stock and ceiling work during fit-outs and refurbishments.
Construction
Work at height awareness for labourers and trades on scaffolds, towers, roofs and MEWPs - the sector where falls from height cause the most serious harm.
Manufacturing
Working at height training for production and maintenance staff accessing plant, gantries, silos and overhead services across engineering and heavy industry.
Hospitality
Working at heights course for hotel and venue teams who change high-level lighting, dress function rooms and maintain buildings from ladders and towers.
Facilities & cleaning
Work at height training online for window cleaners, facilities staff and contractors working from ladders, podiums and MEWPs on building exteriors and atriums.
Agriculture & farming
Working at heights certificate for farm workers and contractors climbing onto barns, grain stores and machinery, where fragile roofs are a known killer.
Every working at heights resource we offer
Training, certification, refresher, online study and practical guides - all on one accredited platform.
Working at Heights Course
Three modules, short videos, a 20 question assessment and a same-day certificate.
Working at Height Training
Employer duties under WAHR 2005 and what good training should cover.
Working at Heights Certificate
How it is issued, its 3 year validity and how employers verify it online.
Working at Heights Online
Flexible study on any device, with progress saved automatically as you go.
Working at Heights Refresher
Renew your certificate in around 45 minutes and reset its 3 year validity.
Working at Heights CPD
What CPD, RoSPA and IIRSM accreditation mean for your training record.
Learn every working at height term in context.
Go beyond definitions. The full Working at Heights Course shows every concept in practice with real workplace scenarios, the hierarchy of control and equipment selection walkthroughs.
Related resources
Put the glossary into practice
Practical working at heights guides that build on the terminology above.
