Two robbers were each sentenced to a minimum of 35 years in prison for the murder of the police constable Sharon Beshenivsky.
A third gang member also received a life sentence and was told he would serve at least 11 years before being considered for parole.
PC Beshenivsky, 38, was shot dead last November during an armed robbery at a Bradford travel agent.
Muzzaker Imtiaz Shah, 25, of Small Heath, Birmingham, and Yusuf Abdillh Jamma, 20, of London, were both given life sentences for the murder at Newcastle Crown Court yesterday.
Shah admitted murder, but was previously cleared of attempting to murder PC Beshenivsky's colleague, PC Teresa Milburn. A third gang member, Faisal Razzaq, 25, of east London, was given a life sentence for manslaughter.
The judge adjourned the sentencing of Razzaq's brother, Hassan Razzaq, 26, for PC Beshenivsky's man-slaughter, robbery and firearms offences until January. Raza Ul-Haq Aslam, 25, of north London, who was cleared of murder and gun offences, will be retried for robbery in February.Reuse content