How much public liability insurance do I need?

The short answer: £2 million for most, £5 million for contracts

For most sole traders and small businesses, £2 million of public liability cover is the sensible starting point in 2026. It is the most commonly bought level in the UK, typically costs around £118 a year, and is only about £10–£15 more than £1 million cover. Choose £1 million only if your risk is genuinely low — home-based work, by-appointment services, little face-to-face contact with the public. Step up to £5 million (around £140 a year) the moment you tender for council, NHS, school or housing-association work, or set foot on a construction site: £5 million is the minimum those clients routinely write into contracts, and government and local-authority tenders commonly ask for £5–£10 million.

The reason under-buying is dangerous is claim size, not claim frequency. A single serious injury — a head injury from a falling tool, a customer blinded or disabled by a slip — can run to £200,000–£300,000 in compensation before legal costs are added, and claims involving lifelong care can go far higher. If a claim exceeds your limit, your business pays the difference. Because insurers price the extra headroom so cheaply, the jump from £1 million to £5 million typically adds only £30–£50 a year.

This page is about choosing the right cover level. For premiums trade-by-trade — cleaners, builders, shops, cafes and more — see the pillar guide: Public liability insurance cost UK 2026.

£1m, £2m, £5m or £10m — how to decide

Public liability insurance pays compensation and legal costs when a member of the public — a customer, client, supplier or passer-by — is injured or has their property damaged because of your business activities. The cover level (the “limit of indemnity”) is the most your insurer will pay for a claim. Match it to the worst realistic accident your work could cause, not the most likely one:

• £1 million — genuinely low-risk businesses: home-based consultants and freelancers, by-appointment services, online sellers with occasional deliveries or markets. Fine until a client contract says otherwise.
• £2 million — the default for most UK small businesses: tradespeople in domestic properties, mobile hairdressers, cleaners, photographers, small shops and cafes. Many commercial landlords and venues set £2 million as their door price.
• £5 million — the public-sector and construction threshold: councils, schools, the NHS and housing associations routinely require £5 million before awarding work, and principal contractors usually demand it from subcontractors on site.
• £10 million — major contracts and high-hazard environments: large construction projects, utilities, rail and airport work, big public events. Some local-authority tenders specify £10 million outright.

Three practical checks before you buy. First, read your contracts — the required level is usually stated in the insurance clause, and quoting the wrong limit can disqualify a tender. Second, check how the limit applies: most public liability policies are written “any one claim”, but some cap the total payout per year (“in the aggregate”), which is materially weaker on a busy site. Third, do not confuse it with employers’ liability — if you employ anyone, even casually, employers’ liability insurance is a separate legal requirement under the Employers’ Liability (Compulsory Insurance) Act 1969, with a £5 million minimum and fines of up to £2,500 per uninsured day.

Public liability itself is not a statutory requirement for most businesses (horse-riding establishments are a rare exception), but it is effectively compulsory in practice: HSE figures show tens of thousands of workplace injuries a year in construction alone, and slips, trips and falling objects remain the most common triggers for third-party claims. One serious claim without cover can end a small business — which is why the £30–£50 a year between £1 million and £5 million is usually the cheapest risk decision you will make.