The seven-time world title winner is set to make the move at the end of the F1 season but after finishing in 10th place in Brazil earlier this month, he was heard saying on the team radio it may have been his "last time" driving for the team, and he's admitted he felt hugely frustrated at the time, but he's determined to "stand strong" for the final races.

He told Sky Sports News: "In the moment, that's how I felt, like I didn't really want to come back after that weekend.

"But I think that's only natural. It's frustrating when you have a season like this, which I'm pretty sure I won't have again, or at least I'll work towards not having again.

"It wasn't a great feeling in that moment, but I'm here.

"I'm standing strong, and I'm going to give it absolutely everything for these last few races."

The 39-year-old driver has enjoyed great success over the years but previously admitted that the "pressures" of trying to make it in his field from a young age had left him with a string of mental health challenges.

However in terms of physicality, Lewis insisted that he is in the best condition he has been in his whole life and has no intention of retiring from the track just yet.

He told The Sunday Times in September: "Honestly, right now I feel I’m healthier than I’ve ever been.

"I’m in such a good place, physically and mentally. My reaction times are still quicker than the young guys. I think I’m a better driver than I was at 22.

"I was just young, energetic and ruthless, but no finesse, no balance.

"I didn’t know how to be a team player, how to be a leader.

"Being a good racing driver, it’s not just about being fast, it’s about being the most rounded.

"When I study the legends, they’re spread between small percentages, so it’s the whole package — what do they speak for, stand for? — that’s what I look at.

"I look to Ayrton Senna and Nelson Mandela, and those are the two people gelled together that I want to be."