Professional Negligence Claim UK: Step-by-Step Guide

Overview

A professional negligence claim is a civil action alleging that a professional failed to exercise the standard of care and skill reasonably expected of someone in their field, and that this failure caused you financial loss. It applies across a wide range of occupations, including accountants, solicitors, barristers, financial advisers, surveyors, valuers, independent financial planners and insurance brokers.

Claims against construction professionals and healthcare professionals follow their own separate protocols and are not covered here. To succeed, you generally need to show three things: that a duty of care was owed to you, that the professional breached that duty, and that the breach caused quantifiable loss.

Time limits matter too. Most claims must be brought within six years of the negligent act under the Limitation Act 1980, though in some circumstances a later three-year window can apply from the date you knew, or could reasonably have known, about the issue. The Professional Negligence Pre-Action Protocol sets the expected conduct before court proceedings begin.

Key steps

1. Check the protocol applies to your situation. The Professional Negligence Pre-Action Protocol covers most professionals but carves out construction disputes and clinical negligence, which have their own rules. Confirm the field your professional works in, identify the right protocol, and make sure you are within the limitation period before spending time and money building a case.
2. Send a preliminary notice. Write to the professional you plan to claim against with a short summary of what went wrong, the nature of the loss you say you suffered, and a request that they notify their professional indemnity insurers straight away. This early heads-up is expected under the protocol and the recipient should typically acknowledge it within around 21 days.
3. Prepare and send the Letter of Claim. This is the substantive document and it needs care. It should name the parties, set out the facts in a clear chronological order, explain why the conduct fell below the required standard, describe the loss with an indicative figure where possible, and list the documents you rely on. A poorly drafted Letter of Claim can undermine an otherwise good case.
4. Wait for the Letter of Acknowledgement. The professional (or their insurer) is expected to acknowledge the Letter of Claim within around 21 days of receipt. If nothing comes back in that window, you may be entitled to proceed to court, although the court will expect you to have behaved reasonably. A missed acknowledgement can also feed into costs arguments later.
5. Receive the Letter of Response or Letter of Settlement. After acknowledging, the professional normally has up to three months to investigate and reply. The Letter of Response sets out which allegations are admitted, which are denied, and the reasoning behind each. A Letter of Settlement, which can come instead or alongside, puts forward terms to resolve things without issuing a claim.