Mr Sycamore is the eighth person to be shot dead by police officers in the past two years - including the controversial shooting of 32-year-old Chelsea lawyer Mark Saunders - and his death also comes amid fears that the police are becoming too trigger-happy; shooting to kill when non-lethal methods of restraint, such as Tasers and CS gas, could be used.
The Police Complaints Commission is investigating these incidents. Mike Franklin, the IPCC commissioner in charge of the Sycamore case, promises that the Dean's concerns will also be examined thoroughly, and, where necessary, 'lessons learned'.
These lessons will come too late for David Sycamore. So who was he, and why was he gunned down with such haste in the place where people seek sanctuary?
In some newspaper articles this week, he has been depicted as an unstable loner with a fetish for replica guns and other weaponry. It was also suggested that he had provoked the police deliberately into killing him, committing 'suicide by cop' to use the jargon.
His family - solid, working-class people - are deeply offended by these stories and do not recognise the character they portray. 'David was shy, and he was very kind and soft,' says his younger brother Mark, 34.
'If someone picked a fight with him he wouldn't hit them back. He was never in trouble in his life.' His mother nods. 'He was a real old-fashioned gentleman. But he had plenty of friends and went out a lot to the pub or the cinema.
'He also had a wicked sense of humour, just like Rowan Atkinson's. Even when he was feeling depressed, he wouldn't moan - he would make a joke out of it.'
