Thursday’s fast-paced F1 news includes a new theory from a Max Verstappen insider on Red Bull’s decision to sack Christian Horner as Sebastian Vettel makes a major announcement. In an exclusive interview with PlanetF1.com, former Marussia boss Graeme Lowdon has shared his memories of the late Jules Bianchi.

Christian Horner’s departure from Red Bull Racing followed an 18-month stretch marked by several key staff departures and growing internal pressures. There’s been plenty of talk about why Horner left,