A Hampshire police officer has been voted the bravest Pc in England and Wales for apprehending an "armed maniac".
Pc Alex Stypulkowski was among the regional winners chosen from 53 officers who were nominated for the annual Police Bravery Awards, held in the City of London.
Pc Stypulkowski was asked to help social services and firearms officers as they tried to section a man, who had taken his mother hostage in the past.
Pc Stypulkowski was chasing the man when he realised he had lost his colleagues. The man had a screwdriver and told the officer "you're going to die".
Pc Stypulkowski used his incapacitant spray and hit the man with his baton, but the pair ended up in a struggle in which he pulled the officer's jacket over his head and stabbed him in the back and neck.
The attacker ran off when another officer arrived, but then reappeared from behind a car brandishing the screwdriver. The police officers had to use spray and a taser before he was arrested.
Chairman of the Police Federation Paul McKeever said: "Pc Stypulkowski deserves the highest praise for his courage and determination in apprehending an armed maniac. Knowing the risks, Pc Stypulkowski fearlessly put his own life on the line to pursue this very dangerous offender. This award deservingly gives recognition to his sheer professionalism and selfless actions."
Other winners included four officers from West Mercia, who risked their lives to free a couple from a burning car.
All the nominees were honoured with a lunchtime reception at Downing Street on Thursday, ahead of the evening awards ceremony.
David Cameron was not at Number 10 because he was out of the country, but Home Secretary Theresa May attended the awards.
Watch an interview with Pc Stypulkowski here.