Professional Indemnity Insurance UK — Cover for Negligence, Errors & Bad Advice Claims

Professional Indemnity (PI) insurance protects your business against claims that your professional advice, services, or work caused a client financial loss. It covers both the legal defence costs and any compensation payable. PI is essential for any business whose deliverable is advice, design, or expertise rather than a physical product — including consultants, accountants, architects, engineers, IT professionals, marketing agencies, and surveyors.

Not for most businesses — but it is required for many regulated professions including solicitors (SRA, £3m minimum), surveyors (RICS, varies), architects (ARB), accountants in some bodies (ICAEW 2.5× fees), and FCA-regulated advisers and brokers. Even where not legally required, PI is contractually required by most B2B clients — most professional services contracts include PI minimums (typically £1m–£5m). Without PI, you can't bid on most professional work.

Public Liability (PL) covers physical injury or property damage caused by your business activities — someone trips at your premises, you damage a client's property. PI covers financial loss arising from your professional work or advice — your advice was negligent, your design failed, your code had bugs. They're different products and most service businesses need both. PL doesn't respond to professional negligence claims; PI doesn't respond to physical injury claims.

UK PI policies respond to claims notified during the policy period, not claims arising from work done during the policy period. If you let your PI lapse and a claim surfaces 3 years after the work, you're personally exposed — the previous policy doesn't respond because the claim wasn't notified during its period. This is fundamentally different from Public Liability and Employers' Liability which are "occurrence-based" (covering events happening during the policy regardless of when claims arise). Continuous PI cover is critical.

The retroactive date is the earliest date for which covered work extends. If your policy's retroactive date is 1 January 2022, work performed before that is excluded — even if the claim arrives during the current policy. When switching insurers, the new retroactive date should match (or pre-date) the original — otherwise you create an uninsured gap. We negotiate retroactive dates that protect your full historical exposure when placing or switching cover.

Run-off cover is continued PI protection after you stop trading, retire, sell the business, or change activities — for claims that arise after you stop but relate to work done before. Run-off is typically 6 years (regulator requirement for solicitors, surveyors, accountants in many cases; recommended for architects). Without run-off, all your past work becomes uninsured the moment your last active policy expires. For sole practitioners and small partnerships planning retirement, this is essential — UK Limitation Act allows claims up to 15 years after work in some cases.

UK PI costs vary dramatically by sector. Indicative 2026 ranges for small businesses (under £150k turnover): consultants/coaches £200–£500; IT/SaaS £550–£1,400; accountants £400–£1,100; architects/engineers £1,200–£3,500; surveyors £900–£2,800; marketing/design agencies £350–£900. Construction-related PI is in a hard market post-Grenfell with cladding-related sectors seeing material increases. Run-off cover typically adds 100–250% of the final year premium as a single one-off cost.

Match your PI limit to the highest of: regulator minimums (if you're regulated); contract requirements from clients (often £1m–£2m for service B2B work); the largest realistic claim you could face (typically a multiple of your largest project fee or contract value). For architects and engineers, project value drives the right limit. For surveyors, valuation amounts drive it. For consultants, client contract sizes drive it. Most UK service businesses settle in the £500k–£2m range; specialist sectors run materially higher.

Yes — provided your retroactive date covers the work period and you've maintained continuous cover since the work was done. If you've never had PI before, the policy typically has a retroactive date matching the policy start date — meaning earlier work is excluded. If you've had continuous PI with multiple insurers, the retroactive date should reach back to the original first policy. Gaps in cover create exposure for work done during the gap that surfaces as a claim later.

Standard UK PI exclusions: deliberate or fraudulent acts; claims known about at policy inception; insolvency-related claims (in some sectors); contractual penalties beyond compensation owed; claims arising from work outside your declared activities; criminal acts; certain sector-specific exposures requiring add-ons (e.g. cladding for architects, money laundering for solicitors, AI-output liability for tech). The Insurance Act 2015 also allows insurers to reduce or void cover if material facts weren't disclosed at proposal — accurate declaration is critical.

Notify your PI insurer immediately, even before formal claim. Most policies require notification of "circumstances which may give rise to a claim" — a much lower threshold than a formal claim letter. Late notification can prejudice cover. Do not admit liability, do not commit to remedial work without insurer agreement, do not communicate further with the client about the issue until the insurer has appointed solicitors. The insurer will appoint specialist solicitors and coordinate the defence under the policy.

Straightforward profiles (low-risk consultants, IT contractors, smaller agencies) can typically be placed within 24–72 hours. Regulated professions (solicitors, surveyors, architects) take 3–10 working days as underwriters review your activities and regulator status. Construction-related PI post-Grenfell can take 2–4 weeks for larger limits as specialist Lloyd's placement is often required. We move as fast as underwriting allows and flag any expected delays upfront.