Nico Rosberg denied Lewis Hamilton a clean sweep in practice ahead of the Spanish Grand Prix, although it was another Mercedes one-two.

Sebastian Vettel took the honours in final practice to give Red Bull chief Christian Horner something to smile about following a protracted meeting with FIA technical director Charlie Whiting.

Red Bull scorched the field in final practice for the Spanish Grand Prix on a morning when Nick Heidfeld narrowly avoided being set on fire.