Jenson Button feels that Max Verstappen is keeping Lewis Hamilton in F1 which is why the seven-time world champion signed a new two-year deal to stay with Mercedes until the end of 2023.
Hamilton and Verstappen are in a titanic battle for the world title and have gone wheel to wheel at five races this year, including the opening four rounds. It's a fight which Hamilton loves according to Button.
"I think Lewis is enjoying it, he's enjoying the fight with someone," Button told Sky Sports. "He knows how talented Max is and how good Red Bull are.
"It's an exciting fight for him and that's what's keeping him interested in F1 and why he's probably get this new contract for the next two years."
Hamilton trails Verstappen by 32 points in the Drivers' Standings heading into the British GP. It's a race that the Mercedes driver needs to win to change the momentum of the championship having not won since the Spanish GP at the beginning of May. Button doesn't now which way it will go this weekend.
"Most of the years we get three of four races into the season and we think 'it's going to be a Mercedes championship it's probably going to be Lewis Hamilton," said Button.
"This year he has a challenge on his hands. I know that he is behind in the championship at the moment to Max, but he will be fighting later in the year I have a feeling.
"Silverstone is a circuit where their car works really well so it should be a really close fight with the Red Bull of Max Verstappen."