Fernando Alonso has been airlifted to hospital after crashing heavily during the final morning of pre-season testing at the Circuit de Catalunya, but a CT scan has confirmed him as 'uninjured'.

Just fifteen minutes before the end of the session, Alonso lost control of his McLaren-Honda MP4-30 on the exit of the fast turn three right-hander and is reported struck the inside wall in what was described as a sizeable shunt.

Tended to by ambulance crews initially, Alonso was taken to the medical centre, where he was reported to be 'OK and conscious'. However, he has now been taken to hospital by helicopter for further checks.

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A statement issued by McLaren confirmed the hospital visit is 'precautionary' before the team spokesperson confirmed to media that he has undergone a CT scan and is 'uninjured'.

"Today at 12:35 CET, while testing at the Circuit de Catalunya (Barcelona), during the fourth and final day of the current test, Fernando Alonso's McLaren-Honda car left the track at Turn Three, causing the right-hand side of his car to strike the wall.

"Fernando was driven to the circuit's Medical Centre where the circuit's doctors gave him first aid.

"He was conscious and spoke with the doctors.

"However, as per usual procedure in such circumstances, he was then airlifted to hospital where he is undergoing precautionary checks.

"We will issue a further update in due course."

Though it remains unclear the exact circumstances of the incident, images show the McLaren having come to a halt alongside the barrier side-on appearing relatively intact.