From Sebastian Vettel to sexting: the rise and fall of the F1's greatest pantomime villain

Christian Horner has been released from his position as Red Bull F1 team principal and will be replaced by Racing Bulls' Laurent Mekies

Last Friday Liberty Media completed its acquisition of MotoGP. What does this mean for the future of motorcycling's biggest championship?

Christian Horner hoped he would end up racing in Formula 1; fell into the team manager role; and became one of the most successful bosses in the series' history. Here's his story, from early days of racing in Formula Renault to managing Red Bull to multiple F1 title triumphs