By sacking Christian Horner, Red Bull has made a big change to try to return to F1 winning ways. But there are other steps it must take, too

Martin Brundle has made a huge claim that the "Verstappen camp" at Red Bull contributed hugely to Christian Horner's sudden exit.

Christian Horner has been dismissed as team principal at Red Bull Racing. Over the past few days, much has been revealed about the Englishman, but the constructor itself has still been reticent in its reporting on Horner's dismissal.