Category: Insurance definitions · Reviewed by Matt Bartlett, Director · Founder · Last reviewed May 2026
A PI binding authority is a written contract under which one or more insurers delegate the authority to underwrite, price, issue and sometimes settle claims on professional indemnity policies to a third party — usually a managing general agent (MGA) or coverholder. The binder defines the class of business, geographic scope, limits, premium rates and reporting requirements that the coverholder must follow.
A binding authority (often called a “binder”) is a delegated underwriting agreement. The insurers carrying the risk — known as the “security” — sit behind the contract; the coverholder fronts the market, quotes brokers and clients, issues policy documents and collects premium, and binds risks within the limits the insurers have agreed.
In UK professional indemnity, binding authorities are widely used because small-to-medium firm PI is high-volume, low-individual-premium business. Underwriting each risk centrally at the carrier would be uneconomic. A coverholder with sector knowledge — accountants, IFAs, smaller solicitors, surveyors, design consultants — can run a programme of similar risks faster and at lower expense ratio than the carrier alone.
The legal foundation in the Lloyd’s market is the Lloyd’s Coverholder regime, which defines minimum standards for governance, segregation of premium, claims handling and reporting. Company-market binders use similar contractual structures but without the Lloyd’s-specific oversight. See PI binders and coverholders for the operational mechanics.
Three elements define how a binder operates day to day.
Defined underwriting parameters. The contract sets out the class of business the coverholder can write (for example, “UK-based accountancy practices with fees under £5m”), the limits and excesses that can be offered, the rates or rating model, prohibited risks, and any sub-limits. The coverholder cannot bind anything that falls outside these parameters without referring back to the carrier — that is, asking specific written approval. Risks within the parameters can be bound without reference, which is what gives the structure its speed.
Reporting and bordereau. The coverholder must produce regular bordereaux — typically monthly — listing every risk bound, every claim notified, premium collected and claims paid. This is the carrier’s only line of sight into the portfolio. Bordereau formats are increasingly standardised (Lloyd’s CDR and similar feeds) so the carrier can ingest data directly.
Audit and claims authority. Carriers normally retain a right of audit and can intervene in claims that exceed a threshold. Claims authority on a binder can be full (coverholder handles all claims), partial (handles claims under, say, £25,000), or none (notifies all claims to the carrier). The split materially affects how a claim against an insured firm is dealt with.
A specialist MGA holds a Lloyd’s-supported binding authority for UK accountants’ PI. The binder sets parameters: ICAEW or ACCA-regulated firms only, fee income up to £5m, limit of indemnity up to £2m, retroactive date no earlier than 8 years, prohibited risks include audits of listed companies and insolvency practice.
A 12-partner Bristol accountancy practice with £3m fees applies for cover through its broker. The MGA quotes £14,000 for £2m of cover on a £5,000 excess, issues the policy under the binder, and reports the risk and premium in the next monthly bordereau. Lloyd’s syndicates A, B and C — who together provide the security on a coinsurance basis — receive their proportional share of the premium net of the coverholder’s commission and broker brokerage.
Eighteen months in, a claim is intimated for £180,000. Under this binder the coverholder has claims authority up to £100,000 and must refer larger matters to the syndicates’ claims team. The coverholder notifies the syndicates, instructs solicitors, and runs the defence collaboratively. The claim is settled at £140,000 plus £35,000 of defence costs. The settlement and costs are reported on the claims bordereau and the syndicates’ share is collected from their accounts.
Had the firm fallen outside the binder — say with fee income of £8m and a listed-company audit — the broker would have had to approach the open market or a different binder. The binder’s value to the broker is speed and certainty when the risk fits; its limitation is rigidity when the risk does not.
Binders matter to brokers, insureds and insurers in slightly different ways.
For brokers and insureds. A binder gives a single point of contact for quoting and policy issue, often with same-day or next-day turnaround on standard risks. Premium and wording tend to be consistent year-on-year because they are driven by the binder’s rates. The trade-off is less negotiability than a freshly-marketed risk would have.
For insurers. A binder concentrates underwriting and expense in a coverholder with sector expertise, but also concentrates aggregation risk: every policy on the binder shares the same insurer balance sheet, and a wording defect in one policy is replicated across the portfolio. Carriers therefore review wordings, rates and loss ratios annually and may impose remedial action or non-renew the binder if performance deteriorates.
For the regulator. The FCA expects coverholders to meet conduct standards on product governance, target market, value, and fair treatment of customers under the FCA’s PROD and ICOBS rules. Lloyd’s adds its own coverholder onboarding and oversight regime. Conduct failings on a binder can result in remedial action across the entire portfolio.
Binders take several common forms in UK PI:
What is a PI binding authority?
A written contract under which one or more insurers delegate underwriting and policy-issue authority to a coverholder. The coverholder can bind risks within defined parameters without prior approval, in exchange for reporting and audit obligations.
Who can hold a PI binding authority?
In the Lloyd’s market, only an approved coverholder. In the company market, the carrier sets its own onboarding criteria. Coverholders are typically MGAs, specialist underwriting agencies or, less commonly, brokers.
Is the coverholder my insurer?
No. The insurer is the carrier or syndicate sitting behind the binder. The coverholder issues the policy on the insurer’s behalf and may handle claims, but the insurance contract is between you and the insurer. The policy schedule should name the insurer carrying the risk.
Are PI binders only used at Lloyd’s?
No. Lloyd’s has the most formal coverholder regime, but the company market uses binders extensively. The contract structures and obligations are similar in principle.
Does a binder offer worse cover than open-market PI?
Not inherently. Binders use carefully drafted wordings tailored to the target sector and can match or exceed open-market wordings. The trade-off is consistency over negotiability: a binder wording applies across all policies issued under it, so individual amendments are rarely available.
Can a binder be cancelled?
Yes. Carriers can non-renew a binder, cancel for breach, or impose mid-term remedial action. Existing policies issued under a cancelled binder normally run to their natural expiry, but new business stops.
How are claims handled under a binder?
Depending on claims authority. If the coverholder has full authority, it manages claims within the binder’s limits. Above a threshold, claims are referred to the carrier’s claims team. The bordereau reports all notifications and settlements.
Does using a binder affect FSCS protection?
Not as such. FSCS protection depends on whether the underlying insurer is FSCS-eligible and the insured is an eligible claimant. The binder structure does not remove FSCS where it would otherwise apply.
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Apex Insurance Brokers Ltd is a Bristol-based insurance broker authorised and regulated by the Financial Conduct Authority (firm reference number 724952). The company is registered in England and Wales under Companies House number 07014570. Contact: info@apexinsurancebrokers.co.uk | 0117 325 0027.
Last reviewed: May 2026 by Apex Insurance Brokers Ltd.
Important: this article is general information, not advice on your specific circumstances. For advice on PI insurance for your firm, contact us on 0117 325 0027 or info@apexinsurancebrokers.co.uk.
Apex Insurance Brokers serves UK professional services firms and commercial businesses. Call 0117 325 0027, email hello@apexinsurancebrokers.co.uk, or request a quotation.
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