Professional Negligence Claims: UK Time Limits Guide

Overview

Professional negligence is where someone offering a professional service fails to meet the standard a reasonably competent member of that profession would have met, and their failure causes you a financial loss. It might be a solicitor who misses a filing date, an accountant who gives poor tax guidance, a surveyor who overlooks a significant defect, or a financial adviser who puts a client into an unsuitable investment.

To bring a claim, you generally need to show three things: that the professional owed you a duty of care, that they breached it, and that the breach caused quantifiable loss. Timing is the fourth hurdle and often the hardest.

English law sets a ceiling on how long after the event you can issue proceedings, and once that period passes the court will usually strike out the claim regardless of how strong it might otherwise have been. Understanding which clock applies to your situation, and when it started running, is therefore the first thing to work out.

Key steps

1. Identify the date the loss occurred. The six-year clock for a claim in tort typically starts running when you first suffered measurable financial damage, which is not always the same day as the mistake. Pinning down this date is crucial because it anchors every other calculation and will be the first thing any adviser or lawyer looks at.
2. Consider whether the claim is in contract, tort, or both. Many professional relationships involve a contract, and a breach of contract claim starts running from the date of the breach itself, which can differ from when the loss crystallised. Running both causes of action in parallel can sometimes give you a longer effective window, so it is worth working out which applies.
3. Check the discovery rule under section 14A. If you genuinely could not have known about the negligence or the loss at the time, section 14A of the Limitation Act 1980 may give you three additional years from the date you had the knowledge needed to investigate. You need to be able to evidence when you first had enough information to reasonably suspect something had gone wrong.
4. Mind the 15-year longstop. Section 14B imposes an absolute cut-off of 15 years from the act or omission, regardless of when you discovered the problem. This is a hard deadline with very limited exceptions, so even latent issues need to be raised before this outer boundary closes.
5. Preserve evidence and get guidance early. Gather your engagement letters, correspondence, invoices, file notes and anything showing what was agreed and when things went wrong. The earlier you act, the more options you typically have, including negotiating before issuing proceedings or agreeing a standstill to pause the clock while matters are explored.