British barrister Mark Saunders was shot dead by police after a five-hour siege at his home in Chelsea, London.

A barrister is a type of lawyer in common law jurisdictions. Barristers mostly specialise in courtroom advocacy and litigation. Their tasks include arguing cases in courts and tribunals, drafting legal pleadings, researching the law and giving legal opinions.

Mark Saunders was a British barrister who was shot dead by police on 6 May 2008 after a five-hour siege at his home in Markham Square in Chelsea, London. Saunders was a successful divorce lawyer who struggled with depression and alcoholism. He had been behaving erratically and drinking heavily in the hours before the incident. Neighbours called the police after Saunders repeatedly fired a shotgun from a window shortly before 17:00. When armed police officers arrived, Saunders fired at their vehicle and the siege began. More armed officers arrived and took up positions in surrounding buildings and on the street. Saunders fired on two more occasions and the police returned fire, slightly wounding him. Around 20 minutes after the previous round of shooting, just after 21:30, Saunders waved the shotgun out of a window. As he lowered it in the direction of a group of police officers, seven officers fired eleven shots, of which at least five struck him. Police entered his flat minutes later and Saunders was taken to a waiting ambulance where he was pronounced dead.

Chelsea is an area in West London, England, due south-west of Charing Cross by approximately 2.5 miles (4 km). It lies on the north bank of the River Thames and for postal purposes is part of the south-western postal area.