How many years after the mistake was this, to make it too late to claim? When was the first time that you could have reasonably discovered the mistake? Short of suing, and possibly making suing unnecessary, you may be able to get redress from the solicitors' governing body in such matters, the Solicitors' Regulatory Authority . They deal with mistakes, professional incompetence and mismanagement, overcharging and all other matters relating to breach of profession's rules of conduct. Have you raised the matter with the solicitor? Your first step ought to be to raise it with the senior or managing partner, or the partner who deals with complaints against the firm . If that brings no satisfaction then go to the SRA. The SRA is not necessarily bound by statutory time limits; in their very nature, some complaints are not appreciated as such by laymen until very late on, and, I regret, some are never recognised and no action is ever taken