A murder investigation has been launched after the death of a man in a reported stabbing in London.

Police were called at 1.47am on Tuesday to the incident at the junction of Bath Road and Great Southwest Road in Hounslow.

Officers and paramedics attended the scene and found a 22-year-old man with serious injuries.

He was pronounced dead on site, despite the best efforts of emergency services.

No arrests have been made and roads around the scene remain closed, with a large crime scene in place.

Detective Chief Inspector Paul Waller, who is leading the investigation, said "everything possible" was done to save the victim.

"Our thoughts remain with his family and friends," he said.

"This is a fast-paced investigation, and enquiries are ongoing.

"Patrols from the local Neighbourhood Policing Team have been increased in the area and anyone with any concerns is asked to speak to officers."

He also asked the public to come forward with any information that could aid the investigation.

He said: "Any information, no matter how minor it may seem, could prove crucial. CCTV, doorbell or mobile phone footage may provide vital evidence."

The victim's next of kin have been informed and are being supported by specially trained officers.