Martin Brundle believes Lewis Hamilton ’s “sarcastic” radio messages to his Ferrari team in Miami indicate “how upset” the British F1 driver is with his current lack of performance.

You might not expect to hear sounds of optimism from a driver of Lewis Hamilton’s pedigree after an eight-place finish, as the Ferrari driver settled for in Sunday’s Miami Grand Prix. But optimism was exactly the word Hamilton used to describe his state of mind after the race.

"Have a tea break!" Hamilton's radio jab doesn't expose a rift in the team, but there is a growing sense of urgency