Public liability insurance for tradespeople: what you need and how much it costs (2026 UK)

Public liability insurance is probably the single most-asked-about policy among UK tradespeople — and for good reason. Get it wrong and you could be personally on the hook for tens of thousands of pounds from a single claim. This guide covers what public liability actually covers, what it does not, how much cover you genuinely need, what you should expect to pay by trade in 2026, and the small-print traps that catch people out.

What is public liability insurance?

Public liability (PL) insurance protects you against claims made by third parties — customers, members of the public, or anyone else who is not your employee — for injury or property damage that arises from your work. If a homeowner trips over your toolbag and breaks their wrist, or you accidentally put a drill through a water pipe and flood two rooms, the resulting claim — compensation, legal defence costs, and any remediation — is paid by your insurer up to the policy limit.

The cover applies to incidents that happen on site while you are working, as well as claims that arise after you have finished and left — known as “products and completed operations” liability. That means if a boiler you fitted three months ago develops a fault because of your installation and causes damage, you are still covered under most standard PL policies (subject to the exclusions discussed below).

Is public liability insurance legally required?

For most trades, public liability insurance is not compulsory under UK law. There is no statute requiring a self-employed plumber, electrician, or builder to hold PL cover before they can work. However, there are important exceptions:

• Gas Safe registered engineers must hold adequate public liability insurance as a condition of Gas Safe registration. Without it, you cannot legally work on gas appliances in the UK.
• Some local authority and NHS contracts require proof of PL as a contractual condition before you can be added to an approved contractor list — effectively making it mandatory if you want that work.
• Checkatrade and MyBuilder listings both require a minimum of £1 million public liability cover to maintain a verified profile — more on this below.
• Most commercial clients require proof of PL cover before any contractor works on their premises, regardless of trade.

In practice, operating without PL cover is genuinely difficult if you want to grow beyond informal word-of-mouth work. A single uninsured claim of £30,000–£50,000 — entirely realistic for a serious property damage incident — could end a sole trader business overnight. The premium is almost always a small fraction of that exposure.

What does public liability insurance cover?

A standard public liability policy for tradespeople covers:

• Injury to a customer or member of the public on or near your work site — slips, trips, falls, burns, or any other physical harm caused by your work or equipment.
• Damage to a customer’s property caused by you or your team — broken tiles, flooded rooms, cracked render, scorched surfaces, and so on.
• Legal defence costs if a claim is made against you, even if it turns out to be unfounded. Defending a baseless claim can cost thousands in solicitor’s fees; your insurer covers this.
• Damage to third-party property you are working on— for example, if you damage adjacent property while working on a customer’s roof.

What public liability does NOT cover

Understanding the exclusions is just as important as understanding the cover. PL insurance does not cover:

• Your own injury. If you fall off a ladder on site, PL pays nothing. You need personal accident cover or income protection for that.
• Your tools and equipment. Stolen or damaged tools are covered under a separate tools insurance policy, not PL.
• Your vehicle. Van damage or accidents while driving are covered by your motor insurance policy, not PL.
• Faulty workmanship itself. This is the most misunderstood exclusion. If a customer is unhappy with the quality of your plastering, the cost of redoing the plastering is not a PL claim — that is a contractual dispute. PL only covers damage or injury that results from the faulty workmanship. For example, if a poorly fitted pipe joint fails and floods the floor below, the flood damage is covered — but the cost of refitting the joint is not.
• Employee injuries. If one of your workers is injured on site, that falls under employers’ liability insurance (see below), not public liability.

How much cover do you actually need?

PL policies are sold in cover levels — the maximum the insurer will pay on any single claim. The right level depends on the type of work you do and who you work for:

The jump in premium between £1 million and £2 million cover is usually £30–£60 per year — rarely a significant deciding factor. The jump to £5 million is more meaningful, typically adding £100–£250 per year depending on your trade, but it unlocks a much larger pool of commercial work that requires it. For most tradespeople who do any commercial work at all, £5 million is the pragmatic choice.

Typical annual costs by trade (2026 UK)

Premiums vary significantly by trade because insurers price the risk of the work, not just the business size. Here are indicative 2026 annual cost ranges for a sole trader with no prior claims, based on £1 million cover:

These are indicative figures for a sole trader with a clean claims record doing domestic work. Premiums increase with higher cover limits, greater turnover, additional employees or subcontractors, and any history of claims. Gas engineers pay more because the consequences of a gas-related incident are severe; roofers pay more because working at height carries significantly elevated third-party injury risk.

Factors that affect your premium

Insurers calculate your premium based on a combination of factors. The most significant are:

• Trade type. Higher-risk trades (roofing, gas, structural work, working at height) pay significantly more than lower-risk trades.
• Annual revenue. The more work you do, the greater the statistical exposure to claims. Most insurers ask for your turnover and price accordingly.
• Employees vs subcontractors. Adding employees to a policy increases the premium. Using labour-only subcontractors (LOSCs) can sometimes be rated differently — check whether your policy covers subcontractors or requires them to carry their own PL.
• Claims history. Any prior claims, especially in the last five years, will increase your premium substantially. A single large claim can double or treble your renewal premium.
• Cover limit selected. Higher limits cost more, though the incremental increase from £1m to £2m is usually modest.
• Type of work. Domestic vs commercial vs industrial work carries different risk profiles. Working at height above a certain level, with gas or hazardous materials, or in occupied buildings all typically attract additional loadings.

Paying annually rather than monthly typically saves 10–15%, since monthly payments are effectively a loan. If you are renewing and your circumstances have not changed, always get at least three quotes — renewal premiums are routinely higher than switching to a new insurer would be.

Small print to watch out for

Most disputes between tradespeople and their insurers at claim time come down to exclusions buried in the policy wording. The key ones to check:

Faulty workmanship vs damage caused by faulty workmanship

Almost every PL policy excludes the cost of remedying your own faulty workmanship — that is a contractual matter, not an insurance claim. However, a good policy should cover the consequential damage that faulty workmanship causes. If your pipe joint leaks and ruins a kitchen ceiling, the ceiling damage should be covered even if the joint re-fit is not. Read the wording carefully: some budget policies exclude both, which makes them almost worthless for any practical claim.

Working at height exclusions

Many policies exclude work above a certain height — typically 15 metres or 20 metres — unless specifically noted on the schedule. Roofers, scaffolders, and anyone regularly working at height must ensure their policy explicitly covers the heights they work at. Some policies also require specific safety measures (edge protection, harnesses, scaffolding rather than ladders) to be in place — if you are working differently and have a claim, the insurer may decline it.

Asbestos, contaminated land, and pollution exclusions

Standard PL policies almost universally exclude claims arising from asbestos disturbance, contaminated ground, or pollution incidents. Contractors doing demolition, refurbishment of older buildings, or groundwork should check whether they need specialist cover for these risks — and if so, obtain it separately.

Sub-contractor coverage

If you use subcontractors, check whether your policy covers their actions or requires them to carry their own PL. Many policies cover labour-only subcontractors up to a certain turnover limit but exclude bona fide subcontractors (those supplying their own materials and equipment). If a subcontractor causes damage on your job and their own policy does not respond, you may be exposed if yours does not cover them either.

Employers’ liability insurance: when you need it

Employers’ liability (EL) insurance is a separate policy — and unlike PL, it is compulsory under UK law. Under the Employers’ Liability (Compulsory Insurance) Act 1969, any business with employees must hold at least £5 million of EL cover, though virtually all policies provide £10 million as standard. The penalty for not holding EL when you are required to is £2,500 per day — not per incident, but per day you are without valid cover.

The definition of “employee” under the Act is broader than most tradespeople expect. If you pay anyone to work under your direction — whether on PAYE, as a casual worker, as an apprentice, or even as a labour-only subcontractor working exclusively for you — you may legally require EL cover for them. If in any doubt, speak to a broker rather than assuming you are exempt.

EL costs vary by trade and number of employees, but as a rough guide, expect to pay £300–£800 per employee per year for trade businesses. Many insurers bundle EL with PL as a combined trade insurance package, which is usually more cost-effective than buying them separately.

Checkatrade and MyBuilder: what they require

Both Checkatrade and MyBuilder require tradespeople to hold a minimum of £1 million public liability insurance to maintain a verified listing. You will need to upload a copy of your certificate when joining, and both platforms periodically require proof that your cover is still current. If your policy lapses and you forget to renew, your listing can be suspended.

For higher-tier listings on either platform, or for categories of work that carry higher risk, the required minimum may be higher — always check the specific requirements for your trade category on the platform you are using.

Keeping your certificates and documents organised

One of the practical headaches with insurance is keeping track of certificates, renewal dates, and policy schedules when clients or platforms ask for them at short notice. A customer asking for proof of cover before letting you start work should not mean hunting through emails from six months ago.

Trade2Base lets you store your insurance certificates, Gas Safe card, NICEIC or NAPIT certificates, and any other trade documents in one place, with renewal reminders so you never accidentally let a policy lapse. You can share a link to your current certificates with clients directly from the platform. See the features page for more on document management and trade admin tools.

If you ever need to defend an insurance claim, having timestamped job records, signed quotes, job notes, and before-and-after photos available immediately makes the process significantly smoother. Insurers and solicitors both want contemporaneous documentation — records created at the time, not reconstructed months later. Trade2Base stores all of this automatically against every job.