A woman in her 40s has died and four other people were injured after a crash involving five vehicles on the A605 in the early hours of Sunday morning.

The collision happened at about 1.30am on Sunday 8 November on the A605 between Warmington in Northamptonshire and Elton in Cambridgeshire, in foggy conditions. Northamptonshire Police said a BMW 2 Series travelling towards Thrapston and a BMW X6 heading in the opposite direction towards Peterborough collided head-on.

Two lorry drivers who were travelling towards Peterborough stopped to offer help after the first collision. While their vehicles were stationary at the scene, a Kia Ceed then struck the BMW 2 Series, turning a two-car crash into a five-vehicle pile-up involving two cars and two heavy goods vehicles.

The driver of the BMW X6, a woman in her 40s, died of her injuries at the scene. The driver of the BMW 2 Series, a man in his 20s, suffered serious injuries and has been arrested on suspicion of causing death by dangerous driving. An arrest on suspicion is not a charge, and no charge has been announced.

Both lorry drivers were also injured in the second collision, one of them seriously. A passenger travelling in the Kia suffered minor injuries, police said.

Emergency services were called to the road at about 1.30am. The A605 was closed while officers examined the scene and the damaged vehicles were recovered, and it has since reopened.

Road reopened as police appeal for witnesses

The A605 has since reopened following the incident. Detectives from Northamptonshire Police's Serious Collision Investigation Unit are now appealing for witnesses to come forward as they work to establish the full circumstances of the crash.

Officers are particularly keen to hear from anyone who was driving in the area at the time, or who may have dash-cam footage of the collision or of the vehicles involved in the moments before it happened. Drivers who were travelling on the A605 between Warmington and Elton in the early hours of Sunday have been asked to check any dash-cam footage they may have.

Anyone with information is asked to email CollisionAppeals@northants.police.uk, call the Drivewatch Hotline on 0800 174615, or contact Northamptonshire Police on 101, quoting incident number 26000690175.

Fog caused disruption on roads elsewhere in England on Sunday, including a pile-up involving around 30 vehicles on the M20 in Kent in which two people were seriously injured. Police forces across the country have urged drivers to slow down and increase their following distance when visibility drops.

The investigation into the A605 crash remains ongoing, and police have not yet released the name of the woman who died.