Brad is on the roll of solicitors of England & Wales but does not hold a practising certificate and does not provide legal advice.
Updated June 2026 · England & Wales
Bringing a medical negligence claim in England or Wales is rarely a quick or cheap exercise. Expert reports alone can run into thousands of pounds, and that is before you factor in court fees, barristers' fees, and the time your solicitor spends building the case.
If the claim does not succeed, somebody has to pay those costs, and it is usually the losing party. After-the-Event (ATE) insurance is the product many claimants use to transfer that financial risk. Taken out once a dispute has already arisen, it pays out if the case fails, covering the opponent's costs and the claimant's own disbursements.
For anyone considering a clinical negligence claim against an NHS trust or private provider, understanding how ATE works is an important part of the decision to go ahead.
Overview
ATE insurance is a policy taken out after an event has happened, typically after an injury or loss has occurred and a legal claim is being contemplated. It is distinct from Before-the-Event (BTE) cover, which is bought in advance as part of a home or motor policy.
In clinical negligence work, ATE is usually arranged alongside a Conditional Fee Agreement (CFA), more commonly known as a no-win-no-fee arrangement. The policy sits on top of the CFA and plugs the gaps the CFA does not cover. If the claim wins, the claimant typically recovers damages and the solicitor's base costs from the defendant, and the ATE insurer is paid its premium.
If the claim loses, the insurer steps in to meet the liabilities covered by the policy, which commonly include the defendant's legal costs and the claimant's own disbursements such as expert fees. Since the Jackson reforms in 2013, most ATE premiums are no longer recoverable from a losing defendant, but a carved-out exception applies to clinical negligence claims for the element of the premium that covers expert report costs on liability and causation.
Key steps
Get an initial view on whether there is a claim. Before any insurance is put in place, you need a solicitor who handles clinical negligence work to look at the broad facts and form a preliminary view on prospects. ATE insurers will only offer cover where the case is assessed as having reasonable prospects of success, usually pitched at 51% or higher. 2. Agree a funding structure with your solicitor. Most claimants fund clinical negligence cases through a Conditional Fee Agreement combined with ATE insurance. Your solicitor should walk you through how the CFA works, what success fee applies if you win, and how the ATE premium is structured. Ask whether the premium is deferred and self-insured, which is standard in this area. 3. Application and underwriting. Your solicitor applies to one or more ATE providers on your behalf, sending a case summary, medical records review, and an assessment of prospects. The insurer underwrites the risk and either offers terms, asks for more information, or declines. Strong cases with clear breach of duty and causation are easier to place than borderline ones. 4. Policy issued and claim progresses. Once the policy is in force, your solicitor can instruct experts and issue proceedings knowing that adverse costs and disbursements are covered if the case fails. You should read the policy schedule carefully to understand the cover limit, any exclusions, and the conduct obligations that can void the policy if ignored. 5. Outcome and premium payment. If you win or settle, the premium becomes payable, usually out of damages, with the recoverable element for expert reports on liability and causation claimed from the defendant. If you lose, the insurer pays out in line with the policy and, in most self-insured arrangements, the premium itself is written off so you are not out of pocket.
Q Do I have to have ATE insurance to bring a medical negligence claim?
No, it is not a legal requirement. You can fund a claim privately, through legal aid in the narrow categories where it remains available such as severe birth injury cases, or through a trade union or BTE policy. In practice, though, most claimants using a no-win-no-fee agreement also take out ATE to protect themselves from adverse costs orders and wasted disbursements.
Q How much does an ATE premium typically cost?
Premiums vary widely depending on the value of the claim, the strength of the evidence, and the stage at which cover is arranged. They can range from a few hundred pounds to many thousands. Most clinical negligence policies are deferred and contingent, meaning the premium is only payable if you win, which keeps the upfront financial burden low.
Q What happens to my damages if I win?
If the claim succeeds, damages are paid by the defendant. Your solicitor's base costs are usually recovered from the defendant as well. The success fee under your CFA and the non-recoverable portion of the ATE premium are typically deducted from your damages, subject to the cap that applies in personal injury and clinical negligence work.
Q Is part of the ATE premium still recoverable from the other side?
In clinical negligence cases, yes, but only a narrow slice. The part of the premium that insures against the cost of expert reports on liability and causation remains recoverable from a losing defendant under the post-LASPO rules. The rest of the premium is not recoverable and comes out of damages or is written off on a loss.
Q Can my ATE policy be cancelled or voided?
Yes. Policies contain conduct requirements, such as acting on your solicitor's reasonable advice, not rejecting a sensible Part 36 offer, and disclosing relevant information honestly. Breaching these terms can allow the insurer to avoid the policy, which would leave you exposed to adverse costs. It pays to read the schedule and ask questions before signing.
Q Does ATE cover me if the defendant makes a Part 36 offer?
Most policies cover the costs position up to the point a Part 36 offer is made. If you reject an offer and go on to beat it at trial, your cover continues normally. If you reject it and fail to beat it, you may face cost consequences that the policy may not fully cover. This is one of the most important moments to take guidance before deciding what to do.
Q Can I take out ATE after proceedings have already started?
It is possible but harder. Insurers prefer to underwrite a case before significant costs have been incurred on either side, because by then the risk picture has changed. Some providers will still offer mid-case cover, though the terms are often less favourable. The earlier you put ATE in place, the cleaner the arrangement tends to be.
Funding a clinical negligence claim is a big decision, and ATE, CFAs, and deferred premiums can be difficult to weigh up without a conversation. An experienced legal adviser can help you think through the options based on what you describe, so you know what questions to put to any solicitor you instruct.
✓Plain-English answers to your specific questions about ATE and no-win-no-fee funding
✓Practical perspective on what to watch out for when instructing a clinical negligence solicitor
✓Guidance tailored to what you describe about your situation and potential claim
✓Clarity on the funding options that might be worth exploring next
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Written & reviewed by
Brad Askew Solicitor (non-practising)
Brad is on the roll of solicitors of England & Wales but does not hold a practising certificate and does not provide legal advice. LegalDocuments.co.uk is not a law firm and does not provide regulated legal advice.
This article is for general information only. It is a tool to help you find your way — not legal advice, and not a substitute for speaking to a qualified adviser about your situation.