Two teenagers have been rushed to hospital with serious head injuries after a crash in Hackbridge.
The incident took place at around 5am on the A237 at London Road - traffic is currently being directed around the bridge in Hackbridge.
It is understood that one man was riding a bicycle and the other was on a motorbike - both men are 18-years-old.
An air ambulance was scrambled to the scene with two ambulances and two fast responders.
The men were taken to St George's Hospital, in Tooting, as a priority.
A diversion is in place for the 151 bus.
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