Lewis Hamilton has delivered an ominous warning to his Formula One rivals by vowing to improve on his almost flawless championship-winning campaign.
Hamilton emerged from his winter hibernation at Silverstone on Wednesday to see the Mercedes he hopes will fire him to a sixth world title.
The 34-year-old British driver delivered the season of his career, winning 11 of the 21 races, to beat Ferrari's Sebastian Vettel and secure his fifth championship with two rounds to spare last year.
And as he enters the first campaign of the new two-year Mercedes deal which will earn him £40million-a-season, a fully-refreshed Hamilton is ready to continue his dominance of the sport.
"2018 was a great year, but I feel like 2019 can be even better," he said.
"I want to achieve more, I want to continue to keep pushing. I feel energised and I am ready to attack."
Hamilton, who will be partnered at Mercedes for a third successive season by Valtteri Bottas, will get his first taste of the new Silver Arrows during a private filming event at Silverstone on Wednesday afternoon.
The Englishman has kept a relatively low profile over the off-season, spending time in America, while also attending the Super Bowl earlier this month.
Hamilton added: "I had a great Christmas with my family and then I went snowmobiling, I went skiing, I went surfing with Kelly Slater, which was amazing.
"I completely switched off from racing for a while, trying to focus and re-centre myself and training hard for the new season.
"I'm really looking forward to the next step of our journey together with Mercedes and embarking on what's not been done before."
Toto Wolff, the Mercedes team principal, said: "When we met after the winter break, Lewis was refreshed.
"He's extremely hungry and wants to start racing again."
The opening winter test gets under way in Barcelona on Monday before Hamilton opens his championship defence in Melbourne on March 17.
