A young man has been left with life-threatening injuries after an incident on a busy motorway near Reading. 

Police were called to a concern for welfare incident near Burnt Hill between junctions 12 and 13 on the eastbound carriageway of the M4 at around 12.30am.

Officers found the man - believed to be aged between 15 and early twenties - with life-threatening injuries. The man has been taken to hospital, where he remains in a critical condition.

Thames Valley Police had previously issued an appeal for help in identifying the young man, saying that no missing person reports matched his description. 

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A spokesperson from the force said: "The victim has been identified and his next of kin have been made aware.

"Thank you to everyone who shared our appeal."