UK professionals and small businesses often confuse professional indemnity and public liability insurance, but they cover different risks. Professional indemnity responds to claims that your advice or work caused a client financial loss, while public liability responds to third-party injury or property damage. This guide explains the difference rather than picking a winner, using Association of British Insurers and FCA sources. Kael Tripton does not provide quotes, does not route enquiries to brokers, and does not earn commission from any provider mentioned.
Key Facts
- Professional indemnity covers the cost of compensating clients for loss caused by negligent services or advice, and a claim can be brought even where advice was given for free (ABI, accessed June 2026).
- Public liability covers claims by members of the public for injury or property damage connected to a business, but not the business' own employees (ABI, accessed June 2026).
- Professional indemnity is usually written on a claims-made basis, covering claims brought during the policy term (ABI, accessed June 2026).
- Some professions must hold professional indemnity; for example, solicitors are required to hold cover of between £2 million and £3 million for any single claim (ABI, accessed June 2026).
- Both covers are sold by FCA-authorised insurers, and disputes can be referred to the Financial Ombudsman Service (FCA; FOS, accessed June 2026).
At a glance: professional indemnity vs public liability
| Attribute | Professional indemnity | Public liability |
|---|---|---|
| What it covers | Client loss from negligent advice or services | Third-party injury or property damage |
| Who claims | Clients and third parties affected by the work | Members of the public |
| Legal status | Mandatory for some regulated professions | Not generally compulsory |
| Cover basis | Usually claims-made | Usually occurrence-based |
| Typical buyer | Advisers, consultants, designers | Trades, shops, anyone meeting the public |
| Excludes | Bodily injury and property damage claims | Professional advice and employee injury |
| Regulator and disputes | FCA-authorised insurers; FOS | FCA-authorised insurers; FOS |
What professional indemnity is
Professional indemnity insurance covers the cost of compensating a client for loss or damage caused by negligent services or advice. According to the Association of British Insurers, it responds when professional advice causes a client to lose money, and a claim can be brought even if the advice or service was provided for free. It typically also covers the legal costs of defending such claims.
It is usually written on a claims-made basis, meaning the policy in force when a claim is made responds, not the policy in force when the work was done. This makes continuous cover and run-off cover important for professionals who stop trading but could still face claims about past work.
Some regulated professions must hold it. The ABI notes that solicitors are required to hold professional indemnity cover of between £2 million and £3 million for any single claim, and other regulated professions face similar requirements set by their regulators.
What public liability is
Public liability insurance covers claims made by members of the public for personal injury or property damage connected to a business' activities. The ABI states it meets the compensation awarded and the legal costs of defending the claim. It protects against the everyday physical risks of dealing with the public, such as a customer tripping in a shop or a contractor damaging a client's property.
Public liability is not generally a legal requirement, though many contracts and venues require it. It does not cover the business' own employees, who are covered by the separate and compulsory employers' liability insurance, and it does not cover claims about the quality of professional advice.
It is usually written on an occurrence basis, meaning the policy in force when the incident happened responds, even if the claim is made later.
How the cover differs
The core distinction is the nature of the harm. Professional indemnity deals with financial loss caused by what you advised or produced; public liability deals with physical injury or property damage caused by your activities. A management consultant whose advice loses a client money needs professional indemnity; a plumber who floods a customer's kitchen needs public liability.
The two rarely overlap, which is why many businesses need both. A design-and-build contractor, for example, faces public liability risk on site and professional indemnity risk in the design work. An architect visiting a site has both exposures at once. Buying both is not duplicative where a business carries out advisory work and physical work.
The cover basis also differs. Professional indemnity's claims-made structure means lapsing cover can leave you exposed to claims about past work, so run-off cover matters. Public liability's occurrence basis means the policy at the time of the incident responds, which behaves differently when cover changes.
How the cost differs
Premiums for both covers vary by profession, turnover, claims history, and the limit of indemnity chosen, so there is no single price. Professional indemnity for high-risk advisory work tends to cost more relative to turnover than public liability for low-risk activities. Premium ranges depend on these factors; check provider policy schedules and FCA-authorised brokers for live quotes rather than relying on a single figure.
Who professional indemnity suits
Consultants, accountants, solicitors, architects, surveyors, designers, IT contractors, and other advisers whose work could cause a client financial loss. It is essential where a professional regulator requires it and prudent for anyone giving advice or providing a specialist service.
Who public liability suits
Tradespeople, retailers, hospitality businesses, event organisers, and any business whose staff or premises interact with the public. It is widely required by client contracts and venues even though it is not generally compulsory.
When you need both
Businesses that both advise and carry out physical work usually need both covers. Architects, engineers, design-and-build contractors, and many consultancies face professional indemnity exposure from their advice and public liability exposure from their site presence. Carrying both is not duplication; each responds to a different type of claim. If you also employ staff, employers' liability is separately compulsory.
Frequently asked questions
Do I need both professional indemnity and public liability?
If your business both gives advice or produces work and also interacts physically with clients or the public, you likely need both. They cover different risks: financial loss from your work versus injury or property damage from your activities.
Is professional indemnity or public liability a legal requirement?
Public liability is not generally compulsory. Professional indemnity is mandatory for some regulated professions; for example, the ABI notes solicitors must hold between £2 million and £3 million of cover per claim.
What does claims-made mean for professional indemnity?
Claims-made means the policy in force when a claim is made responds, not the one in force when the work was done. This is why continuous cover and run-off cover for past work matter for professional indemnity.
Does public liability cover mistakes in my advice?
No. Public liability covers injury and property damage, not the quality of professional advice. Claims about negligent advice or services fall under professional indemnity.
Can I switch from one cover to the other?
They are not interchangeable, because they cover different risks. If your activities change, for example moving from manual work to advisory work, you should review which cover or covers you need rather than swap one for the other.
How do I check an insurer for either cover is authorised?
Search the firm's name or reference number on the FCA Register at register.fca.org.uk. Both covers are sold by FCA-authorised insurers, and eligible disputes can be referred to the Financial Ombudsman Service.
