A murder probe has been launched after a man who was left fighting for life following a "horrifying" daylight attack at a service station died in hospital.
Emergency services were scrambled to the petrol station forecourt of Cobham Services on the M25 at 3.15pm on Monday.
Police were called to reports of a fight between two groups of people.
A 20-year-old man was attacked by two men and was flown to St George’s Hospital in Tooting by air ambulance with “substantial” head injuries. He died on Wednesday.
The two men left the scene in a white van, which was found abandoned in Chessington on Wednesday.
Senior investigating officer Detective Chief Inspector Jo Hayes, of Surrey Police, said: “This was a horrifying attack at a busy petrol station on the M25, and I am sure that there are people who saw what happened but have not yet spoken to my officers.
“This is now a murder investigation, and we are pursuing all avenues of enquiry to bring those responsible to justice.
“I would like to speak to everyone who refuelled at the petrol station, or visited the shop, between 3pm and 3.30pm on Monday 26 June.
“In particular there is a man shown in the store on CCTV wearing military or camouflage clothing who could have very valuable information for the investigation. If this person is you, please come forward.
“There are reports of people filming on mobile phones during the altercation, and immediately afterwards, and it is imperative that we get hold of their footage. There were vehicles on the forecourt during the fight, and I want to speak to those drivers, and view any dashcam footage they may have.
“Finally, although we have recovered the van, we still need to piece together its movements. The van is described as a white Peugeot Partner Van, registration NX63 VLP, with a roof rack and ladder strapped to the roof.
“If you saw the van between 3.30pm on Monday and 10am this morning, or have information about the driver and their whereabouts, please contact us as a matter of urgency.”
Anyone with any information is asked to call Surrey Police on 101 (999 in an emergency) or report it online at report.police.uk, quoting 45170068211.
You can also report any information you may have to the independent charity Crimestoppers in complete anonymity by calling 0800 555 111.
