At least eight murders over festive season since Christmas Eve plus stabbings and other violence
A man was arrested on suspicion of attempted murder after two police officers were hit by a car in Leeds city centre.
They were responding to an incident on foot when they were struck by a vehicle in Trevelyan Square at around 11:30pm on Wednesday, December 27.
Both officers, a man and a woman, went to hospital and were treated for soft tissue injuries and later discharged.
A 56-year-old man was arrested at the scene and was taken to hospital.
The suspect remains in hospital, West Yorkshire Police said.
He was also arrested on suspicion of drink driving.
A day earlier two people were arrested on suspicion of attempted murder after a teenager was stabbed Boxing Day.
Bedfordshire Police dispatched officers to Woodcock Road, Luton, at about 3:10am on Tuesday.
The alleged victim, who is in his late teens, was taken to hospital, where he remained in a stable condition.
A 23-year-old man and a 17-year-old boy were arrested and remained in police custody, the force said.
Officers said they want to speak to anyone who was in the area at the time or who may have doorbell or dashcam footage.
Det Insp Jon Wheeler from Bedfordshire Police said: "I would urge anyone who can assist us to get in touch immediately to shed some light on the situation.
"Knife crime remains an area of concern and priority across the county, but we are working hard to keep Bedfordshire safe by challenging those that choose to carry weapons and use them to incite fear and harm others."
Two days earlier, in the early hours of Christmas Eve, a 19-year old man and a 19-year old woman were arrested on suspicion of attempted murder and later bailed by police.
Devon and Cornwall Police said the pair, who were arrested on Sunday in Helston, Cornwall, had been bailed until 25 March.
The victim, who suffered potentially life-threatening injuries, remains in a serious condition in hospital.
It follows an assault on Lady Street, at about 3:00am on Sunday.
Detectives said they were not looking for anyone else in connection with the incident.