PC Tracey Bullas, aged 44, gave life saving first aid to a victim of a ferocious knife attack she found bleeding to death in a house in Beighton.
The officer arrived at the crime scene in Elm Road, Beighton, and found a man who had stopped breathing after he was stabbed in the neck by his ex-partner’s new boyfriend.
Darren Raistrick was slumped over the arm of a settee with a knife embedded in his neck when police officers arrived.
Michael Mallinder, of Armstead Road, Brighton, who was later jailed for 20 years for the attack which paralysed his victim, was found next to the casualty.
PC Bullas threatened to taser the attacker until he dropped a second weapon he was brandishing, then gave emergency first aid to the victim after removing the knife from his neck.
The officer was presented with a 'resuscitation certificate' by the Royal Humane Society for carrying out mouth to nose CPR – an act that surgeons said 'saved the victim’s life'.
The Society said she had gone 'beyond the call of duty'.
She said: "It's an honour to be recognised by the Royal Humane Society.
"The biggest reward for me was to see the difference that my actions made to the victim's life and that he got to see his family again."
The actions of PC Bullas,who was presented with her certificate by Bob Dyson, former Deputy Chief Constable of South Yorkshire Police, was described as ‘extraordinary and courageous’ by bosses when they presented her with a special award for her efforts earlier this year.
In 2012 PC Bullas received a Royal Humane Society award for carrying out CPR on an 11-year-old boy.
She arrived at the scene of a suspected hanging and took over the attempted resuscitation of the child.
Paramedics arrived shortly afterwards and she continued with the resuscitation efforts by administering chest compressions in the ambulance on the way to the Sheffield Children’s Hospital.
The youngster later died.