Olaseni Lewis, a 23-year-old British man, died on 3 September 2010 at Bethlem Royal Hospital in London, United Kingdom, after police subjected him to prolonged physical restraint. Lewis had voluntarily sought care following the onset of acute mental health issues and died from cerebral hypoxia (lack of oxygen to the brain) soon after, following actions that involved eleven officers of London's Metropolitan Police. After seven years of campaigning by Lewis' family and two inquiries by the Independent Police Complaints Commission (IPCC), a second coroners' inquiry was raised.