WATCH: Police release CCTV of the moments before Alison McBlain was hit by a car in Blackburn

In the video, Alison and victim Christian Rivers can be seen crossing King Street in the town at 7.41pm, before the Fiat Punto, driven by Kaylib Connolly, pulls round the corner, and drives at speed towards the couple.

Detectives have also released an image of Karis Poynton, making a phonecall to Jon-Paul Chatwood to inform him of Alison and Christian's whereabouts on that fateful night.

Following a five week trial at Preston Crown Court, four defendants, Joshua Titterington, Kaylib Connolly, Dean Qayum and Karis Poynton received life sentences for the murder of the 37-year-old mother of one.

Jon-Paul Chatwood was sentenced to 14 years in prison for manslaughter. 

DCI Lee Wilson, of Lancashire Police’s Force Major Investigation Team, said: “Alison McBlain – a mother, daughter and beloved friend to many – was deliberately run over and killed in a calculated, premeditated revenge slaying.

“Poynton played a key role initially, when she saw the victims and made a phone call to one of the Bully Line Jon-Paul Chatwood with their location (image above).

"She knew full well they were the targets of a revenge attack when she made the call.

“Those in the car knew what would happen when, moments later, they switched off the car’s headlights and deliberately drove at the pair in the dark.

"The car became a murder weapon, with the victims having no warning or time to get out of the way.

“Those in the car fled the scene, before abandoning the car down an alleyway nearby.

“Sadly, Alison died from her injuries just two days after the attack.

"As a result of her death a 13-year-old boy has lost his mother, while her family and friends have been left utterly heartbroken.

"They have also been put through the ordeal of a trial because the offenders refused to admit what they had done.

“The pain caused to Alison’s loved ones cannot be overstated and they must be commended for showing great dignity throughout this whole difficult process.

"We hope they can now take some comfort in knowing five people are behind bars.

“I am pleased that the jury reached guilty verdicts for the parts that five of the defendants played in the attack and am satisfied with the sentences handed down by Sir Peter Openshaw DL.

"I hope they use their time in jail to reflect on their abhorrent actions.

“I would also like to offer sincere thanks to colleagues in the Crown Prosecution Service (CPS) and to the prosecuting counsel for their hard work throughout this process.”