Professional Negligence Claims UK: How to Bring One

Overview

Professional negligence is a civil claim brought against someone acting in a professional capacity who has fallen short of the standard expected of a reasonably competent member of their profession, causing you loss. It is essentially a breach of a duty of care, either under contract, in tort, or both, depending on how the relationship was set up.

The classic test comes from case law: the professional's conduct is measured against what an ordinary skilled practitioner in that field would have done. If the professional acted in line with a body of responsible opinion in their field, they will usually not be considered negligent, even if other practitioners would have done things differently.

Common examples include a solicitor missing a limitation date, a conveyancer failing to flag a restrictive covenant, an accountant giving incorrect tax guidance, a surveyor overlooking structural defects, or a financial adviser recommending an unsuitable investment. To succeed, a claimant generally has to prove duty, breach, causation and loss.

Each element can be contested, and claims often turn on expert evidence about what a competent professional should have done.

Key steps

1. Gather the paperwork. Pull together every document connected to the professional's work: the engagement letter or retainer, correspondence, invoices, reports, file notes, and anything showing the loss you have suffered. The strength of a claim often turns on what the contemporaneous records actually say, so build a clear chronology before you do anything else. 2. Check the time limits. Most professional negligence claims must be brought within six years of the breach in contract cases, or six years from when the damage occurred in tort. A longer three-year window can apply from the date you knew, or should have known, about the problem, with a fifteen year long-stop. Missing these deadlines usually ends the claim entirely. 3. Follow the Professional Negligence Pre-Action Protocol. Before issuing court proceedings, the courts expect you to send a Preliminary Notice, then a detailed Letter of Claim setting out what went wrong, why it was negligent, and what loss flowed from it. The professional then has three months to investigate and respond. Skipping this step can result in cost penalties later. 4. Get independent expert input. Professional negligence cases almost always need an expert from the same field to comment on whether the work fell below the standard expected. Without that evidence, it is very hard to prove breach. You will also want to quantify your loss properly, which may involve forensic accountants or other specialists depending on the facts. 5. Weigh up settlement versus court. Many claims resolve through negotiation, mediation or the professional's insurer making an offer. Litigation is expensive and the outcome is never guaranteed, so think carefully about proportionality: the cost of running the claim, the strength of the evidence, and what a realistic recovery looks like after fees. Early, candid conversations about risk tend to pay off.