Professional Indemnity Insurance UK: What It Costs by Profession

Priya builds websites from a spare bedroom in Bristol. Good ones, too — until the day a client’s online shop went down for three days during their biggest sale of the year, and a letter arrived from a solicitor asking for £40,000 in lost sales. Priya hadn’t been careless. She’d just made a mistake, the kind every professional makes eventually. What saved her was a policy she’d nearly cancelled to save money: professional indemnity insurance. If you sell your skills, advice or designs, this guide shows exactly what professional indemnity insurance costs in the UK, profession by profession — and why the price varies so wildly.

Professional Indemnity Insurance Cost at a Glance

Profession	Typical annual cost (small practice, clean record)
IT consultants / developers	£300 – £600
Management, HR or marketing consultants	£400 – £750
Accountants (ICAEW)	£500 – £900
Surveyors	£600 – £1,800
Architects (residential)	£900 – £1,500
Structural / civil engineers	£1,200 – £2,500
Financial advisers (IFAs)	£2,000 – £5,000
Solicitors	£3,000 – £10,000+

What Professional Indemnity Insurance Actually Pays For

Here’s the simplest way to picture it. Public liability covers the day you knock a client’s laptop off a desk. Professional indemnity covers the day your advice or work costs them money. A wrong tax figure, a design flaw, a missed deadline, a data leak, a line of code that takes a shop offline — PI insurance pays the compensation and, just as importantly, the legal costs of defending you, even when the claim turns out to be nonsense. One quirk trips people up: PI works on a “claims-made” basis. The policy that pays is the one in force when the claim arrives, not when you did the work. That’s why professionals who retire or close down buy “run-off” cover for around six years afterwards. Our public liability vs professional indemnity guide walks through the difference with more examples.

Who Is Legally Required to Have It

For most freelancers and consultants, PI insurance isn’t a legal requirement — it’s a contractual one. Agencies, tenders and corporate clients routinely demand £1 million of cover before they’ll sign. But for regulated professions, the rules are firm and the minimums are high. Solicitors in England and Wales must hold at least £2 million (sole practitioners and partnerships) or £3 million (LLPs and companies) under SRA rules. Chartered accountants with an ICAEW practising certificate need at least £2 million — a figure raised from £1.5 million in September 2024. Architects must never accept less than £250,000 per claim under ARB guidance, and the cover has to be in place before the first drawing. FCA-regulated financial advisers must carry it too. Unlike employers’ liability insurance, there’s no £2,500-a-day fine for the rest of us — the penalty is simply losing the contract, or paying a claim yourself.

What It Costs: Low-Risk Professions

If you’re an IT contractor, a marketing consultant, a copywriter or a business coach, the good news is that insurers see you as a fairly safe bet. Your mistakes tend to cost clients thousands, not millions, and they’re usually fixable. That’s why headline prices start so low: AXA quotes from around £6 a month, Hiscox from £8, Simply Business from under £7. Real premiums for a one-person consultancy typically land between £300 and £750 a year for £1 million of cover. Brokers price it per £100 of fee income — roughly 40p to 80p for IT consultants, 50p to £1.20 for management consultants — so a freelancer billing £60,000 a year might pay £300 to £700. If that’s you, the freelancer liability guide and our upcoming piece on business insurance for consultants cover the rest of your set-up.

What It Costs: Regulated and High-Risk Professions

Now imagine you’re an architect. One error in a drawing can mean a building that fails inspection, a contractor’s claim, and years of litigation — and since the Grenfell tragedy, insurers have become deeply nervous about anything involving cladding or fire safety. A residential architect pays £900 to £1,500 a year; commercial work pushes that to £2,500; high-risk buildings can cost £8,000 or more. Structural engineers sit in a similar band. Financial advisers pay £2,000 to £5,000, because bad investment advice can wipe out someone’s retirement. Solicitors top the table: a general practice pays £3,000 to £6,000 minimum, and a conveyancing-heavy firm can face £10,000-plus, because property transactions generate the most expensive claims in the profession. Accountants fall in the middle at £500 to £900 for small practices.

The Five Things That Move Your Premium

Two consultants in the same city can be quoted prices 400% apart, and there’s a logic to it. First, your profession — brokers call it the single biggest factor. Second, your fee income: premiums scale with turnover, though not in a straight line, so bigger firms pay less per pound. Third, claims history, and this one bites hard. One notified claim can add 20% to 50% to your renewal; several, or a paid one, can double or triple it. Fourth, what you actually do inside your profession — a solicitor doing wills is priced very differently from one doing conveyancing. Fifth, who your clients are and where. A £3,500 fee on a £50 million project carries £50 million of exposure, not £3,500, and any work for US clients can add 30% or more on its own.

How Much Cover Do You Need?

Policies run from £100,000 to £5 million, and £1 million is the sweet spot most small firms choose — partly because so many client contracts ask for it. The jump in price is smaller than you’d guess: Hiscox’s worked examples show £250,000 of cover at roughly £400 a year and £1 million at around £600, because the first pound of cover is the expensive one. Check two details in the small print. “Any one claim” cover resets the limit for each claim; “aggregate” cover is a single pot for the whole year. And “costs in addition” means legal fees are paid on top of your limit rather than eating into it — it adds 10% to 20% to the premium but can be the difference between enough cover and not enough. Our small business insurance guide explains how PI fits alongside your other policies.

How to Pay Less Without Under-Insuring

Priya, the web designer, paid £380 a year for £1 million of cover — less than her phone bill. Here’s how to land at the cheap end of your band. Choose a higher excess if your cash flow can stand it. Keep a written record of your risk management — signed contracts, scope documents, clear terms — because insurers reward it. Ask whether your professional body runs an insurance scheme; members often get better rates. Be honest about turnover and services, since under-declaring to save £50 can void the policy when you need it. Finally, get at least three quotes — we’ll show you how in our guide to comparing business insurance quotes — and never let cover lapse between policies, because under the claims-made rule a gap today can leave you uninsured for work you did years ago.

The Bottom Line

That £40,000 letter? Priya’s insurer appointed a solicitor, negotiated the claim down, and settled it without a penny leaving her account. She’d spent an evening weighing whether £380 a year was “worth it”, which in hindsight was like asking whether a seatbelt is worth it. The cost of professional indemnity insurance comes down to what you do, what you earn and how clean your record is — but for most small businesses it’s cheaper than the coffee habit. Work out where you sit in the table above, decide how much cover your clients expect, and get quotes this week. If you want the full picture first, start with our complete guide to small business insurance.

Frequently Asked Questions

What is professional indemnity insurance?

It’s cover that pays compensation and legal costs if a client claims your advice, design or work caused them financial loss. It protects professionals against mistakes and negligence claims.

How much does professional indemnity insurance cost in the UK?

From around £70 a year for low-risk freelancers to £10,000 or more for solicitors. Most small consultancies pay £300 to £900 a year for £1 million of cover.

Is professional indemnity insurance a legal requirement?

Only for regulated professions such as solicitors, chartered accountants, architects and financial advisers. For everyone else it’s usually a client contract requirement rather than the law.

Why does professional indemnity insurance cost more for some professions?

Because the size of a typical claim differs. A solicitor’s conveyancing error or an architect’s design fault can cost millions, while an IT consultant’s mistake is usually smaller and fixable.

How much professional indemnity cover do I need?

£1 million suits most small businesses and matches what most contracts ask for. Regulated professions have set minimums, and big contracts may demand £2 million to £5 million.

Disclaimer: This article is general information, not financial or legal advice. Premiums shown are broker and insurer guideline figures for 2026 and will vary with your circumstances. Always check your regulator’s current rules and speak to an FCA-authorised adviser or broker before buying cover.