In a UK professional indemnity claim, a loss adjuster is an independent professional appointed by the insurer to investigate the facts, quantify the loss and report; a claims handler is an in-house employee of the insurer (or of a delegated claims authority) who manages the file day-to-day, sets reserves and authorises payments. Most PI claims are run by a claims handler with a loss adjuster instructed only where independent fact-finding is needed.
What loss adjuster and claims handler mean in PI insurance
A loss adjuster is an independent investigator, usually a member of the Chartered Institute of Loss Adjusters (CILA), engaged by the insurer to investigate specific claims. The adjuster’s role is fact-finding and reporting — interviewing parties, inspecting documents, instructing experts on technical points and producing a written report on liability, quantum and coverage. Adjusters are independent of the insurer in professional terms (they owe duties under CILA’s code of ethics) although they are paid by the insurer.
A claims handler is an employee within the insurer’s own claims department, or within a delegated authority (a broker, MGA or specialist firm) that has been given binding authority on behalf of an insurer. The claims handler owns the file: they receive the notification, set the initial reserve, decide whether to instruct panel solicitors, brief loss adjusters where needed, negotiate with claimant solicitors, and authorise settlement payments within their authority limit. On complex claims, the claims handler reports up to a senior claims manager or to the underwriter who priced the policy.
The two roles are complementary. On most PI claims, the claims handler runs the matter from start to finish without ever instructing a loss adjuster. On factually complex or large claims, the loss adjuster is brought in to do work the in-house team cannot do efficiently — site visits, technical interviews, coverage opinions on disputed wording.
How loss adjuster and claims handler interact in practice
When a notification arrives, the typical sequence is:
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Notification triage. The insurer’s claims handler logs the notification, opens the file, sets an initial reserve and confirms cover (or raises any coverage question). On SRA MTC-compliant solicitors’ cover, the policy must indemnify defence costs from the outset; on commercial PI, the handler will check the wording and the policy schedule before confirming.
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Decision on external resources. The handler decides whether to instruct (a) panel solicitors to provide a legal view and run the defence; (b) a loss adjuster to investigate the facts; (c) both, on a coordinated basis; or (d) neither, where the claim is small or clearly defensible without external input.
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Loss adjuster’s investigation. Where instructed, the adjuster takes a written brief from the handler, contacts the insured firm to set up interviews, inspects relevant project or transaction files, instructs technical experts where needed, and produces a written report. The report goes to the claims handler, not to the insured. Adjuster recommendations are advisory; the handler decides.
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Ongoing management. Once external resources are in place, the claims handler coordinates: they review legal opinions, instruct the adjuster to update the report as facts develop, approve expert costs, negotiate the reserve up or down, and engage with the broker on behalf of the insured. The insured firm typically has a single point of contact (the handler or a delegated adjuster) for day-to-day questions.
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Settlement decisions. The handler makes the settlement call within their authority. Above authority, they refer up to a senior handler, claims manager or referring underwriter. The loss adjuster’s role at this point is to support the recommendation with the factual and quantum work they have done.
Worked example: a surveyor’s negligent valuation claim
Consider a Bristol surveying firm with £1m of PI cover and a £10,000 excess. A buyer claims the firm negligently over-valued a Victorian terrace by £75,000, leading to over-payment. The matter is notified through the broker.
- Claims handler, day 1: opens the file, sets an initial £100,000 reserve (allowing for diminution, consequential loss and defence costs), confirms cover, instructs panel solicitors for a liability opinion.
- Loss adjuster, week 2: instructed because the valuation methodology and the comparables used will need to be reviewed by someone with surveying expertise. The adjuster takes the file, interviews the surveyor who carried out the inspection, instructs an independent valuer to peer-review the valuation, and reports back at week 6. The peer review concludes the valuation was within a reasonable range — £15,000 high but defensible.
- Claims handler, week 7: reduces the reserve to £40,000 in light of the adjuster’s findings, instructs panel solicitors to take a robust position with the claimant, and authorises £25,000 of defence costs.
- Settlement, month 9: claimant accepts £20,000 plus their reasonable costs. The handler approves the settlement; the insurer pays £20,000 plus £18,000 in costs, less the £10,000 excess applied to the indemnity element.
Total insurer outlay: roughly £45,000. Total firm outlay: £10,000 excess. The adjuster’s report was the work product that allowed the handler to reduce the reserve and take a confident negotiating position. The figures are illustrative.
When this matters most
The loss adjuster / claims handler split matters most in three situations:
Complex factual claims. Construction, design and surveying claims often turn on what was done on site, what was specified, and what the comparator was. A loss adjuster with a relevant technical background does in days what a desk-based handler would struggle to do in weeks.
Large or unusual quantum. Where quantum could exceed the policy limit or where the claim crosses an excess layer, both the primary and the excess insurer’s handlers may want their own loss adjuster involved. Coordinated instruction avoids duplication.
Coverage questions. Where there is a question whether the policy responds at all — late notification, allegations of dishonesty, an arguably excluded activity — the loss adjuster’s report is often the document that records the facts on which the coverage decision is made. The handler then takes a view, sometimes after a coverage opinion from external counsel.
Common variations and market wording
UK PI claims arrangements use several related terms:
- “Third party administrator” (TPA). An external firm that handles claims under delegated authority from one or more insurers. The TPA’s people are claims handlers in function even if they are not insurer employees.
- “Coverholder claims authority.” A broker or MGA with binding authority that includes claims handling within agreed limits, reporting to the underwriting insurer above those limits.
- “Panel solicitor.” A law firm on the insurer’s approved panel, instructed by the claims handler to provide legal opinions and run the defence. Distinct from the loss adjuster.
- “Independent loss adjuster.” Emphasises the adjuster’s independence from the insurer in professional terms. Adjusters are bound by CILA’s code of ethics on independence.
- “In-house adjuster.” Some larger insurers employ adjusters directly rather than instructing independents. The role is similar; the employer is the insurer rather than a separate firm.
- “Forensic accountant” / “forensic engineer.” Specialist experts often instructed by the loss adjuster (or the panel solicitor) on quantum or technical liability points. Not the same as the adjuster.
Related concepts
- Notification deadline — what triggers the claims process.
- Circumstance notification — how to notify before a formal claim.
- Quantum of a PI claim — the financial measure the adjuster reports on.
- Defence costs inside vs outside the limit — how legal and adjuster costs are treated.
Frequently asked questions
Do I always have a loss adjuster on a PI claim?
No. Most PI claims are run by a claims handler without an adjuster being instructed. Loss adjusters are typically brought in where the facts are complex, the technical issues need an outside view, or the claim is large enough to justify the cost. A small or clear-cut claim may be settled by the handler with only panel solicitor input.
Who pays the loss adjuster?
The insurer pays the adjuster’s fees. On most UK PI wordings these are included as defence costs or claims expenses — they may sit inside or outside the limit depending on the schedule. The insured firm does not pay the adjuster directly.
Is the loss adjuster on my side or the insurer’s side?
Neither, strictly. The adjuster’s professional duty is to investigate the facts independently and report accurately. They are paid by the insurer and report to the insurer, but they are not advocates. A good adjuster will record findings that help and hurt the defence; a defensive insured who treats the adjuster as the enemy often makes the file worse.
Can I refuse to deal with the loss adjuster?
In practice, no — the policy’s claims cooperation clause requires the insured to cooperate with the insurer’s investigation, which includes the adjuster. Failure to cooperate can give the insurer remedies under the Insurance Act 2015 and the policy wording.
Who decides whether the claim is paid?
The claims handler decides, within their authority limit, on the recommendation of the adjuster and any legal advice. Larger settlements are referred up to senior handlers or claims managers. The adjuster does not authorise payments.
What’s the difference between a loss adjuster and a panel solicitor?
A loss adjuster investigates facts and reports on them; a panel solicitor advises on the law and runs the defence in correspondence and litigation. The two roles overlap on quantum analysis but are otherwise distinct. On a contested claim heading toward litigation, the panel solicitor usually leads strategy with the adjuster supporting on facts.
Can I bring my own adjuster?
The insured can engage their own consultant or accountant to support their position, but the insurer’s appointed adjuster is the one whose report drives the file. Where an insured firm wants independent advice on the insurer’s handling of the claim, that is usually a job for the broker rather than a competing adjuster.
How long does adjuster investigation take?
A simple investigation can be turned around in two to four weeks. A complex matter — multiple project files, technical experts, several witnesses — takes two to six months for the initial report, with updates as facts develop. The claims handler manages the timeline against any litigation deadlines.
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About Apex Insurance Brokers Ltd
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.