内容摘要：Four boxes have been placed in the Hertfordshire towns of Letchworth Garden City, Ware and Hertford - with a fifth available in Fowlmere, Cambridgeshire.

Four boxes have been placed in the Hertfordshire towns of Letchworth Garden City, Ware and Hertford - with a fifth available in Fowlmere, Cambridgeshire.

"Rosie epitomises the very best of British policing, she put the safety of others before her own safety," he said."Yesterday morning, she wasn't on duty on a shift, she was off duty, and she came across the road traffic collision on the A19 and she stopped to help.

"She got out and like many police officers up and down the country put herself on duty."He said his thoughts were with the family of Mr Welford and that it was a "deeply traumatic and heart-breaking event for everyone involved".Home Secretary, Yvette Cooper, said the deaths of Ms Prior and Mr Welford were a "profound tragedy".

"This brave officer's passing serves as a reminder of the risks that our dedicated police officers face every single day in the line of duty," she said.The Bishop of Kirkstall, the Right Reverend Arun Arora, paid tribute to Ms Prior and Mr Welford, saying their friends and families were in his thoughts.

He told BBC Radio York: "They will be in our prayers and our condolences to them at this time."

The Mayor of York and North Yorkshire and deputy mayor of policing, fire and crime said they were "devastated" by the deaths of Ms Prior and Mr Welford.Mistakes made by West Midlands Police "materially contributed" to their deaths, an inquest heard.

The Home Office said it was doing everything in its power to tackle domestic abuse and support victims.On the night they were killed by Tarin, Ms Oudeh called the force four times to register concerns for her safety.

It had previously responded to 10 domestic abuse incidents linked to violence at Tarin's hands and five officers have been subsequently disciplined over failings of the force.Ms Oudeh married Tarin, 21, in an Islamic ceremony, but broke up with him when she discovered he had a secret wife and children in Afghanistan.