The difference between public liability and professional indemnity insurance comes down to the kind of harm a client suffers. Public liability insurance covers physical harm: someone injured, or property damaged, because of your business activities. Professional indemnity insurance covers financial harm: a client who loses money because your advice, designs or services were wrong.
Most professional businesses face both risks, which is why the two covers are so often bought together. This guide walks through what each one does, the key differences between public liability and professional indemnity cover, and how to work out the level of cover you need.
What is professional indemnity insurance?
Professional indemnity insurance protects your business if a client claims they lost money because of your professional advice or services. It covers the compensation and the legal fees, whether the claim involves a genuine mistake or an allegation you go on to defend successfully.
Professional indemnity insurance covers claims alleging:
- Professional mistakes, errors or omissions in your work
- Breach of confidentiality, including mishandled client information
- Accidental copyright or intellectual property infringement
- Defamation or libel
- Loss of client documents or data
If you provide a professional service and a client acts on your work, this is the cover that answers when that work is challenged. An architect whose design error costs the client money to fix, an accountant whose advice triggers a penalty, a consultant whose report leads a project astray: all professional indemnity territory.
What is public liability insurance?
Public liability insurance protects your business if a member of the public, including clients and suppliers, claims against you for injury or property damage linked to your work. A client trips over a loose carpet in your office; you knock a laptop off a desk at their premises. Neither has anything to do with the quality of your advice, and neither is covered by professional indemnity.
Public liability cover typically includes:
- Injury to clients, suppliers or members of the public
- Damage to other people’s property
- Legal fees for defending a claim
- Compensation payments, including repair and replacement costs
Key differences between public liability and professional indemnity
| Public liability | Professional indemnity | |
| — | — | — |
| Covers | Injury and property damage | Client financial loss |
| Claims come from | Anyone affected by your activities | Clients who relied on your work |
| Typical trigger | An accident, on the spot | A mistake discovered later |
| Legally required? | No, but often demanded by contracts and venues | No, but often required by regulators and clients |
| Claim timing | When the incident happens | “Claims made”: the policy must be live when the claim arrives, which can be months or years after the work |
Both insurance policies cover compensation and the legal fees of defending you; what separates them is which claims they answer. And that last row matters more than it looks. Because professional negligence often surfaces long after the work is finished, professional indemnity works on a claims-made basis: the policy needs to be active when the claim is made, not just when the work was done. It’s the main reason professionals keep PI cover running continuously rather than switching it on per project.
Do you need both public liability and professional indemnity insurance?
If your business gives advice and shares physical space with other humans, realistically yes. Public liability and professional indemnity are the core pair of business insurance covers for most professional firms. A management consultant can trip a visitor; a photographer can lose a client’s images. The two covers answer different claims, and having one doesn’t help with the other.
Neither is a legal requirement for most businesses (unlike employers’ liability once you have staff), but the practical pressure is real: client contracts, venues and local authorities routinely require proof of public liability insurance, while regulators and larger clients demand professional indemnity insurance before you can practise or get on a supplier list.
How much cover do you need?
For public liability, the common limits are £1 million, £2 million, £5 million and £10 million, and the honest guide is your contracts: £1-2 million suits most office and home-based work, while councils and public-sector clients often ask for £5 million or more.
For professional indemnity, start with whoever regulates you. Regulated financial advisers, for instance, have FCA minimum requirements (currently £1.25 million per claim), and many firms buy well beyond the minimum when the advice carries long-lasting consequences, such as pension transfers or high-value property transactions. Unregulated professionals should size cover against the biggest loss their advice could plausibly cause, which is usually far larger than the fee involved.
What about freelancers and contractors?
The same logic applies, with one extra pressure: agencies and end clients often make both covers a condition of the contract, particularly for IT contractors and consultants working through their own limited companies. If you freelance, check your contract’s insurance clause before you quote; it usually names the exact limits you need. Holding public liability and professional indemnity insurance inside one policy also keeps the admin simple: one renewal, one set of documents to show the agency.
Common examples of each claim type
Professional indemnity claims: an accountant’s tax return error leads to an HMRC penalty; a web developer’s mistake takes a client’s store offline during a sale; a surveyor misses a defect that later costs the buyer thousands; a marketing consultant reuses an image the client had no licence for.
Public liability claims: a client slips on a wet floor at your studio; your camera bag trips a passer-by at an outdoor shoot; you spill coffee across a client’s server keyboard; a display stand falls at an exhibition and injures a visitor.
Reading the two lists together makes the division obvious: one list is about money lost through judgement, the other about bodies and property meeting accidents.
Getting the right cover in one policy
There’s no need to buy the two covers separately. Every Professional Saver policy includes public liability automatically, with professional indemnity available as an optional cover in the same quote, from £55* a year. If you’re weighing up what your own business needs, get a quote online; five minutes shows you both prices side by side.
