Run-Off Professional Indemnity Insurance: What It Is and When You Need It

Professional Indemnity (PI) insurance operates on a 'claims-made' basis. This is a fundamental concept that many UK business owners and consultants misunderstand until it is too late. Unlike Employers' Liability, which covers incidents occurring during the policy period regardless of when the claim is filed, PI insurance must be active at the moment a client brings a legal action against you. If you retire, close your firm, or change careers, and a former client sues you for an error made years ago, your current standard PI policy (or lack thereof) will leave you exposed. This is where run off professional indemnity insurance becomes critical.

The Legal Mechanics of Run-Off Cover

Run-off cover provides protection for historic work after a business has ceased trading or an individual has retired. Because legal claims for professional negligence in England and Wales can arise years after the service was delivered, the 'claims-made' trigger creates a significant liability gap. Under the Limitation Act 1980, a claimant generally has six years from the date of the alleged negligence (or the date of loss) to initiate legal proceedings. In some cases involving latent damage, this can extend even further.

According to an InsuranceDico Q1 2026 broker survey, approximately 14% of PI claims against SMEs are initiated more than three years after the project was completed. Without run-off cover, the individual practitioner or former directors of a dissolved company remain personally liable for the legal costs and damages. Even if a business is liquidated or dissolved via Companies House, liquidators or claimants can sometimes 'pierce the corporate veil' or pursue former directors if they believe there has been a breach of fiduciary duty or if the professional was personally negligent in their advice.

Run-off insurance essentially acts as a 'tail' to your previous policy. It does not cover new work, but it maintains the 'retroactive date' of your original policy, ensuring that the insurance safety net stays in place while the statute of limitations runs its course.

Who Requires Run-Off Protection?

While any professional offering advice or services should consider run-off, for many industries in the UK, it is a mandatory regulatory requirement.

1. Solicitors: The Solicitors Regulation Authority (SRA) mandates that firms must have at least six years of run-off cover. If a firm closes without a successor practice, the existing insurer is often required to provide this cover automatically under the 'Minimum Terms and Conditions' (MTCs), though the premiums can be substantial.
2. Accountants: Bodies such as the ICAEW and ACCA generally require members to maintain run-off cover for a minimum of six years after ceasing practice.
3. Architects and Surveyors: The RIBA and RICS have strict requirements, often suggesting six years for contract-under-hand and up to 12 years if the contract was signed as a deed.
4. IT Consultants and Engineers: While not always mandated by a regulator, those working on large-scale infrastructure or data architecture are at high risk. The ICO has previously highlighted that data breaches resulting from poor legacy system design can lead to litigation years after the initial deployment.

Costs and the 'Decaying' Premium Model

The cost of run-off professional indemnity insurance is not a flat fee. Typically, the first year of run-off cover costs around 100% of the last annual premium. This is because the risk of a claim is highest immediately after the cessation of work. In subsequent years, the risk theoretically diminishes, and premiums often follow a 'decaying' scale.

Typical UK Cost Scenario: An independent structural engineer, who paid an annual PI premium of £2,500, retires in 2024. Their run-off premium schedule might look like this:

• Year 1: £2,500 (100% of final premium)
• Year 2: £2,000 (80%)
• Year 3: £1,625 (65%)
• Year 4: £1,250 (50%)
• Year 5: £1,000 (40%)
• Year 6: £875 (35%)

In total, the engineer might pay roughly £9,250 over six years to protect their retirement savings and personal assets. While this seems high, the ABI notes that the average cost of defending a professional negligence claim in the High Court can exceed £50,000 before damages are even considered.

Critical Exclusions: The 'Known Circumstances' Trap

A common mistake made by UK professionals is failing to disclose potential issues before entering run-off. A critical exclusion found in almost all run-off policies is 'Prior Known Circumstances'.

If you are aware of an unhappy client or a project that went over budget due to your error before you initiate the run-off policy, and you do not notify your insurer at that time, the run-off policy will likely exclude any subsequent claim related to that incident. Insurers view this as 'insuring a burning building.'

Another significant exclusion often missed by generic advice is the 'Insolvency Exclusion'. Some policies will not cover claims arising from the professional's own insolvency or the insolvency of a project partner, unless specifically negotiated. Furthermore, Cyber-Crime exclusions have become standard. While your legacy PI might cover 'professional error' in code, it may not cover the data breach costs if the claim is framed as a failure of cyber security rather than professional negligence, unless a specific cyber-extension was maintained.

Claims Process and Strategy

When a claim arises during the run-off period, the process is identical to a standard PI claim, but with one complication: you no longer have an active business infrastructure to gather evidence.

1. Notification: Notify the broker or insurer immediately upon receipt of a 'letter of claim' or even a 'circumstance' (e.g., a former client asking for project files for a legal audit).
2. Document Retention: You must retain all files, emails, and contracts for the duration of the run-off period. The Lloyd's Market Association advises that the lack of contemporary documentation is the single biggest reason why PI claims fail in the defence stage.
3. The 'Single Premium' Option: Some insurers offer a 'single premium' run-off policy where you pay one lump sum (typically 3x to 4x the annual premium) to cover the entire six-year period. This is often preferred by retiring partners as it provides 'finality' and avoids the hassle of annual renewals.

How to Choose the Right Run-Off Cover

When selecting cover, do not simply look for the cheapest premium. Consider the following:

• Retroactive Date: Ensure the policy covers you back to the very start of your business, not just the last few years.
• Limit of Indemnity: Should it be 'aggregate' or 'any one claim'? An aggregate limit is the total the insurer will pay for all claims in a year. 'Any one claim' is more robust, providing the full limit for each individual claim.
• Financial Rating: Check the insurer's Standard & Poor’s or A.M. Best rating. You need an insurer that will still be solvent and able to pay out in six years' time.

In conclusion, run-off professional indemnity insurance is not an optional 'extra' for those exiting a profession; it is an essential component of a UK professional's risk management strategy. Whether you are a sole trader retiring or a director closing a limited company, the long tail of liability under English law means your past work stays with you long after the final invoice has been paid. Maintaining cover ensures that a mistake made in the past does not destroy your financial future.