Summary

The HSE licensing regime for asbestos removal exists because work with the most hazardous asbestos-containing materials — insulation, coating, and insulating board — creates fibre concentrations that can rapidly exceed the control limit of 0.1 fibres per cubic centimetre (f/cm³). A licence provides assurance that the contractor has the systems, trained personnel, and equipment to carry out this work safely. In Great Britain, the licence is issued and regulated by the HSE and is valid for a maximum of three years before renewal is required.

Understanding whether a particular piece of work requires a licence, falls into the NNLW category, or is non-notifiable non-licensed work (NNNLW) is one of the most consequential judgements a tradesperson or contractor makes on site. Getting it wrong in the direction of under-classification — treating licensed work as non-licensed — puts workers and building occupants at serious risk and exposes the contractor to unlimited fines and potential imprisonment. Getting it wrong the other way wastes client money and may delay a project unnecessarily.

For tradespeople who do not hold an asbestos licence, the practical impact of this regime is largely about knowing when to stop and bring in a licensed contractor, and understanding their own obligations when carrying out NNLW or NNNLW — notification, training, RPE, health surveillance, and record-keeping still apply even without a licence.

Key Facts

  • Licence issued by — HSE Asbestos Licensing Unit (ALU); contact via the HSE website or 0300 003 1747
  • Licence validity — up to 3 years; annual or more frequent inspection possible; conditions can be varied or revoked at any time
  • Who must hold a licence — any employer or self-employed person whose employees (or they themselves) carry out licensable asbestos work
  • Licensable materials — asbestos insulation (pipe lagging, boiler insulation, etc.), asbestos coating (sprayed), and asbestos insulating board (AIB)
  • Sporadic and low-intensity exemption — work with AIB or asbestos coating that is sporadic, low-intensity, and unlikely to exceed the control limit may not require a licence [verify current HSE guidance for specific conditions]
  • Control limit — 0.1 f/cm³ averaged over 4 hours; 0.6 f/cm³ over any 10-minute period
  • NNLW notification — at least 14 days before work starts; notify to HSE (most workplaces) or the Local Authority (some service sector premises)
  • NNLW health surveillance — mandatory; must be carried out by a doctor appointed under Schedule 6 to CAR 2012; records kept for 40 years
  • NNLW exposure records — must record date, type of work, duration, fibre type if known; retained for 40 years
  • Licence application fee — payable to HSE; fee level set by HSI/HSE charging regulations [verify current fee amount]
  • Licence conditions — HSE may impose conditions restricting type of work, geographic area, or requiring additional supervision
  • Air monitoring — licensed contractors must carry out background, personal, and clearance air monitoring to BS 8520 or MDHS39/4 as applicable [verify current standard]
  • Four-stage clearance — mandatory for licensed enclosure work: visual inspection, background air monitoring, clearance air monitoring, reoccupation certificate
  • Insurance — contractors must hold adequate public liability insurance; many insurers require sight of the HSE licence before providing cover for asbestos work

Quick Reference Table

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Material Typical Location Licence Required Notes
Pipe lagging / thermal insulation Boiler rooms, plant rooms, industrial premises Yes High risk; friable when disturbed
Sprayed asbestos coating Steel beams, underside of floors, pre-1980 industrial Yes Very high risk; can generate extreme fibre levels
Asbestos insulating board (AIB) Fire doors, partition walls, ceiling tiles (pre-1980) Usually yes See sporadic/low-intensity exemption
Asbestos cement sheets (corrugated) Garage roofs, agricultural buildings No Non-notifiable if brief, good condition
Asbestos floor tiles / vinyl tiles Pre-1970 domestic and commercial floors NNLW if breaking No licence; notify if control limit likely exceeded
Textured coating (Artex) Ceilings, 1970s–1990s domestic NNLW in many conditions Licence not required; conditions vary
Gaskets / rope seals Heating plant, boilers No (if small quantity) Low risk if not abraded
Bitumen products / floor adhesive Pre-1985 floors No Encapsulated; very low risk if intact

Detailed Guidance

What Work Requires a Licence?

The three licensable materials are asbestos insulation, asbestos coating, and asbestos insulating board (AIB). These are defined in Schedule 2 to CAR 2012.

Asbestos insulation includes all forms of thermal insulation applied to pipework, boilers, vessels, and structural steel — typically consisting of amosite or chrysotile in a matrix of calcium silicate, magnesia, or similar. Pipe lagging is the most common example encountered in older commercial and industrial buildings. Any removal, disturbance, or repair of this material requires a licence.

Asbestos coating refers to sprayed asbestos applied to steel beams, underside of concrete floors, and sometimes to walls for fire protection. Predominantly found in buildings constructed in the 1950s–1970s, sprayed asbestos is one of the highest-risk ACMs because it is loose, friable, and can generate fibre concentrations many hundreds of times the control limit. Only licensed contractors may touch this material.

Asbestos insulating board (AIB) is a semi-rigid board containing 16–40% asbestos used for fire protection in ceiling tiles, partition boards, fire doors, infill panels, and electrical switchgear backboards. Breaking, cutting, or drilling AIB generates significant fibre release. While the sporadic and low-intensity exemption theoretically applies to AIB, in practice any planned removal or disturbance beyond the most incidental contact will require a licence.

The sporadic and low-intensity exemption is narrow. The HSE guidance (L143) makes clear that "sporadic" means the work is an occasional, incidental part of the worker's main activity — not a routine task — and that "low intensity" means personal exposure will clearly remain below the control limit. In practice, this exemption most commonly applies to a maintenance worker who infrequently drills a single fixing into an AIB ceiling tile in a controlled environment.

How to Apply for an HSE Asbestos Licence

Applications are made to the HSE Asbestos Licensing Unit (ALU). The process involves:

1. Pre-application preparation. The company must have in place a documented management system covering: procedures for different types of licensed work; supervision arrangements; training records for all operatives; arrangements for air monitoring; decontamination facilities; written plans of work; health surveillance records; and waste disposal procedures. HSE inspectors will want to see evidence that these systems are functioning, not just documented.

2. Completing the application form. The application (available from HSE's website) requires information about the company's structure, types of work to be carried out, geographical area of operation, named supervisors and their qualifications, and details of training for operatives. A fee is payable at the point of application.

3. Inspection by HSE. Following application, the HSE ALU will typically conduct an inspection of the company's premises and potentially a site visit to observe work in progress. The inspector will assess whether the management system is adequate and whether staff are competent. First-time applicants often receive an initial licence with more restrictive conditions or a shorter validity period.

4. Licence issued with conditions. On approval, HSE issues the licence specifying the types of licensed work the company may carry out. Conditions may restrict the scope — for example, to asbestos cement work only, or to non-enclosure removals — and may require the company to employ or contract a licensed asbestos analyst for air monitoring on all projects.

5. Renewal. Licences are renewed on a rolling basis, up to three years at a time. Regular compliance and a clean inspection history support renewal with fewer conditions. Serious breaches can result in revocation, suspension, or non-renewal.

Notifiable Non-Licensed Work (NNLW): Obligations in Detail

NNLW sits between licensed work and NNNLW. It applies when:

  • The work is not licensable (the material is not insulation, coating, or AIB — or it genuinely qualifies for the sporadic/low-intensity exemption), AND
  • One or more of the following applies: it is reasonably foreseeable that the control limit will be exceeded; the work involves the disturbance of asbestos in certain conditions that increase risk; or specific guidance from the HSE classifies the work as notifiable

The notification must be made using the correct form (available on HSE's website) at least 14 days before work commences, to the enforcing authority for the premises. For most workplaces this is the HSE. For offices, retail shops, and certain service sector premises, it may be the Local Authority Environmental Health department.

The 14-day period may be shortened only in genuine emergencies where waiting is not reasonably practicable. The notification must identify the employer, the site, the nature of the asbestos work, the start date, and the expected duration.

Health surveillance for NNLW must be provided by a doctor appointed under Schedule 6 to CAR 2012. The initial examination must take place before the worker begins NNLW, and subsequent examinations must occur at intervals of no more than three years. The doctor issues a medical certificate of fitness, which must be retained by the employer for 40 years.

Air Monitoring: When It Is Required

Licensed work requires clearance air monitoring after the enclosure has been cleaned and before it is removed, to demonstrate that fibre concentrations are at or below 0.01 f/cm³ (the clearance criterion). This monitoring must be carried out by an independent UKAS-accredited analyst.

For NNLW, air monitoring is not legally mandated but is strongly recommended. The HSE's guidance notes that where there is uncertainty about whether the control limit will be exceeded, air monitoring should be used to confirm this and as a basis for selecting appropriate RPE.

Frequently Asked Questions

Can I do asbestos work if I'm self-employed with no employees?

The licensing requirement applies to employers and the self-employed carrying out licensable work. A self-employed person who carries out licensed asbestos work must hold a licence in their own right, even if they work entirely alone. There is no exemption for sole traders. The same applies to NNLW obligations — a self-employed tradesperson carrying out NNLW must notify, maintain health surveillance, and keep exposure records, treating themselves as both employer and employee under CAR 2012.

What are the penalties for carrying out licensed work without a licence?

Prosecution under the Health and Safety at Work etc. Act 1974, with an unlimited fine and/or up to two years' imprisonment on conviction on indictment. The HSE actively investigates unlicensed asbestos removal and takes a dim view of contractors who knowingly carry out licensable work without a licence. Convictions are published on the HSE website and can result in companies being barred from future licence applications.

Does a subcontractor need their own licence, or can they work under the main contractor's licence?

Every company carrying out licensed asbestos work must hold its own licence. Subcontractors cannot work under another company's licence. If a main contractor engages a subcontractor for licensed asbestos removal, the subcontractor must hold a current HSE licence. The main contractor retains responsibility for ensuring that any subcontractor they engage is licensed and competent.

What is the difference between an asbestos licence and an ACAD/ATaC accreditation?

The HSE asbestos licence is a statutory requirement under CAR 2012. Asbestos Consultancy Association (ACAD) and Asbestos Testing and Consultancy (ATaC) accreditations are trade association memberships that demonstrate a higher level of commitment to quality and training but are not legal requirements. They are useful indicators of quality when selecting a contractor and may be required by some clients or frameworks, but they do not replace the HSE licence.

How do I check if a contractor is licensed?

The HSE publishes a list of all current licensed asbestos removal contractors on its website at hse.gov.uk/asbestos/licensing/licensed-contractors. The list is searchable by company name and postcode. Always verify the licence before engaging a contractor for licensed asbestos work — the responsibility for ensuring the work is carried out by a licensed contractor can fall on the principal contractor or client if due diligence is not exercised.

Regulations & Standards

  • Control of Asbestos Regulations 2012 (SI 2012/632) — Regulations 8 and 16 govern licensing; Schedule 2 defines licensable materials

  • L143: Managing and Working with Asbestos — HSE's approved code of practice (ACOP) for CAR 2012; legally significant guidance

  • HSG248: Asbestos: The Analysts' Guide — guidance on air monitoring methods and standards for analysts

  • BS 8520 — standard for air sampling and analysis [verify current edition and whether superseded]

  • MDHS39/4 — HSE methods for the determination of hazardous substances: asbestos fibres in air [verify current issue]

  • BS EN ISO 17020 — accreditation standard for inspection bodies; UKAS uses this for analyst accreditation

  • Hazardous Waste Regulations 2005 (England & Wales) — asbestos waste is hazardous; consignment notes required; carrier must hold waste carrier licence

  • Environmental Protection Act 1990 — duty of care for waste; applies to all asbestos waste producers

  • HSE: Asbestos licensing — HSE's licensing page including application process and contractor register

  • HSE: Licensed contractors register — searchable list of current licence holders

  • L143: Managing and Working with Asbestos (ACOP) — approved code of practice and guidance

  • HSE: NNLW notification — how and where to notify NNLW

  • control of asbestos regs 2012 — full overview of CAR 2012 and duty to manage

  • asbestos survey types — management survey vs refurbishment/demolition survey

  • asbestos containing materials acm — identifying AIB, insulation, and other ACMs

  • asbestos management plan — accessing the asbestos register before starting work