Red Bull sacked Christian Horner, who was Formula One's longest-serving active team principal and one of the most successful of all time, and replaced him on Wednesday with Racing Bulls' Laurent Mekies.

Red Bull have sacked team principal Christian Horner after 20 years in the position, the Formula One team announced on Wednesday.

Red Bull’s performance has slumped this year after the departure of designer and engineer Adrian Newey, a key figure in the team’s success.