A 37-year-old man has died and a man has been arrested after a fatal crash in Merton.

Police were called to Worple Road at 1.45am today (November 18) to reports of collision between a Mercedes car and a pedestrian.

Emergency services attended and despite their best efforts, the man died at the scene.

His next of kin have been informed and are being supported by specialist officers.

The driver of the Mercedes stopped at the scene and was arrested on suspicion of causing death by dangerous driving, failing to provide a specimen when required and driving, or in being charge, when under influence of drink or drugs.

He has been taken into custody.

Police are appealing for witnesses who saw the crash or captured it on CCTV or dash camera.

Any witnesses yet to speak with police are asked to call the SCIU on 02085435157 quoting CAD 473/18Nov.