Christian Horner under investigation at Red Bull after allegation by staff member

Christian Horner is under an external investigation launched by Red Bull following an accusation made against him by a colleague.

It is understood the allegation has been made by another member of staff for the British-based Formula One team which last year carried Max Verstappen to his third consecutive world championship title.

Horner, 50, who has been Red Bull’s team principal since 2005, said: “I completely deny these claims.”

A spokesperson for Red Bull – the Austrian energy drinks company which owns the F1 team – told the PA news agency: “After being made aware of certain recent allegations, the company launched an independent investigation.

“This process, which is already underway, is being carried out by an external specialist barrister.

“The company takes these matters extremely seriously and the investigation will be completed as soon as practically possible. It would not be appropriate to comment further at this time.”

Horner has been team principal at Red Bull since their entry into F1 19 years ago, overseeing seven drivers’ world championships and six constructors’ titles.

Red Bull won 21 of the 22 rounds staged last year, with Verstappen setting a record of 10 consecutive victories as he cruised to his third title in as many years.

Horner, who is married to the former Spice Girls singer Geri Halliwell, was awarded a CBE for his services to motorsport in the new year honours list.

Red Bull are due to launch their latest car on 15 February, ready for the new season starting in Bahrain on 2 March.