POLICE say a schoolboy has been badly injured after jumping on to the A40 close to Hillingdon station, pictured .
The eastbound carriageway was closed for a time but has since re-opened.
Chief Inspector Rob Wilson of Hillingdon police said he was taken to St Mary's Hospital in Paddington with serious injuries.
Douay Martyrs School headteacher Martin Rainsford confirmed to the Gazette that a 16-year-old boy from the Ickenham school had been involved in an incident on the road, but he did not know the circumstances of what had happened.
He said: "We were informed by the police that one of our pupils had sustained serious injuries following an incident on the A40.
"He has now been taken to hospital where I believe his parents are now with him.
"All our thoughts and prayers are with the boy and his family on what must be a horrible day for them. We hope he is able to make a full recovery."
London Ambulance Service said it was called to the scene at 10.15am and sent a fast response vehicle, an ambulance and called the London Air Ambulance car as well.
The police confirmed no other persons were involved and the incident is being treated as 'non-suspicious'.