Two police officers who were gunned down in Manchester were among the fallen honoured at a national memorial service.
To mark National Police Memorial Day hundreds of officers of all ranks were joined by families, politicians and members of the public paying their respects at York Minster.
It came 12 days after Greater Manchester police officers Fiona Bone, 32, and Nicola Hughes, 23, were killed in a gun and grenade attack as they responded to a burglary call in Hattersley, east Manchester, on September 18.
Speaking as he arrived outside The Minster, Chief Constable of Greater Manchester Police Sir Peter Fahy said the recent deaths in his force made the day even more poignant.
"It does give it a special poignancy because it's close after the deaths of Fiona and Nicola but the important thing today really is remembering all the officers who have given their lives during the year.
"I cannot tell you how much we have been uplifted by the public response, it has been quite extraordinary. It really does show the level of support for ordinary officers going about their day to day business."
The service also paid tribute to PC Ian Dibell, 41, who was killed in Clacton on July 9 after intervening in a row.
Association of Chief Police Officer President Sir Hugh Orde said: "The tributes to these officers have shown policing was a true vocation for them.
"We have heard that it was a job Fiona and Nicola loved, and Ian showed his commitment to protecting others even when off-duty, as so many police officers routinely do.
"We commemorate them and their contribution to policing, along with those that the police family has lost in the past."
This year was the ninth annual event remembering those who have died in the line of duty since the foundation of modern policing nearly two centuries ago.
Home Secretary Theresa May attended the event, which attracted 2,000 people, along with dozens of chief constables.
Mrs May read a prayer during the service as did Emma Barker - the young daughter of PC Bill Barker who died when a bridge was washed away during floods in Workington, Cumbria, in 2009.
Shortly before, the names of all officers who had given their lives in the last year were read out, including PC David Rathband, who took his own life after he was blinded by fugitive gunman Raoul Moat.
One of the most moving parts of the ceremony was when petals were dropped from the cathedral's triforium as the orchestra played Abide With Me and The Last Post was played by a trumpeter.
The address was given by the Archbishop of York, Dr John Sentamu, who described fallen police officers as "the bravest of the brave".
Outside, Paul McKeever, chairman of the Police Federation of England and Wales, said: "The bond between police officers is something that's very strong as evidenced by the messages of support we've had in from all around the English speaking world - people who are police officers who recognise the loss that had been felt, particularly in last two or three weeks with PC Ian Dibell, PC Nicola Hughes and PC Fiona Bone as well.
"These are losses that really do affect the police service and families of those who have gone very deeply indeed."