Horner's demise at Red Bull: what we know happened and why

Red Bull's removal of Christian Horner may appear sudden, given only three days have passed since he oversaw Max Verstappen's fifth-placed finish at the British Grand Prix.

But this was a decision at least 18 months in the making.

Horner, in charge for two decades, will go down in F1 history as one of the sport's greatest team bosses.

Yet his long-standing grip on Red Bull Racing had been slipping for some time.