Dennis stands by Hamilton

Hamilton has failed to score in the last two grands prix and has dropped from first to fourth in the championship, but Dennis says it's all part of his learning curve and that Hamilton is constantly improving his game.

"Most people don't really appreciate how difficult the drivers' workload is," Dennis told BBC Newsbeat. "It's one of those things, you've got to put it behind you and focus on the next race.

"It doesn't matter what age you are, you're always going to learn. Lewis is no exception, he puts a lot of effort into understanding the car better, working closer with the team, and maintaining the same balanced approach to his racing and his life as a whole.

"Inevitably, the learning curve for him is steeper now than it will be in two or three years time, but he's really risen to the challenge and he's a very completed individual and a very complete racing driver. It's a pleasure to work with him."