Uxbridge Road in Pinner Green was temporarily closed off by police following a road traffic collision.
The collision happened at the junction with Waxwell Lane with the H12 bus route on diversion.
The road closed at around 3:45pm this afternoon (5 July).
A spokesperson for Met Police said: “Police were called at 15:27hrs on Wednesday, 5 July to reports of a road traffic collision at Waxwell Lane, Pinner.
“Police, London Fire Brigade and London Ambulance Service [LAS] attended. At the scene a Mercedes had collided with a Nissan Juke.
“We await updates concerning any injuries.
There have been no arrests.
“Road closures are in place and officers remain on scene.”