The undercover female police officer involved in the attempt to obtain evidence in the original investigation by befriending him, resigned from the Metropolitan Police force in 1998, taking early retirement. With the support of the Police Federation she too sued the Metropolitan Police for damages arising from the investigation. In 2001, shortly before it was due to be heard, her case was settled out of court and she received £125,000. Her solicitor said: "The willingness of the Metropolitan Police to pay substantial damages must indicate their recognition that she sustained serious psychiatric injury". The payout was widely criticised by various sources, particularly as Nickell's son had been granted £22,000 (less than a fifth of the amount paid to the undercover detective) from the Criminal Injuries Compensation Authority.