Alonso, who has lately struggled to find victory with the legendary Ferrari team, had already been expected to return to McLaren, but rumours had suggested Button would be replaced by Danish rookie Kevin Magnussen.
Today’s announcement means that Magnussen will stay on as reserve driver, with Button now continuing beyond the 268th race this year that was believed to be his last in F1.
Button spared a thought for Magnussen, however.
"I am very glad that Kevin will remain part of the team," he said. "He is a very quick driver and a really nice guy."
For his part, Alonso acknowledged that victory at McLaren may not come quickly.
"I am joining this project with enormous enthusiasm and determination, knowing that it may require some time to achieve the results we are aiming for, which is no problem for me," he said.
Here in Australia, where the first race of the 2015 season will be staged, local Honda Boss Stephen Collins said the new year will be a big one for the Japanese carmaker globally.
“Next year is shaping up to be a big year for the Honda brand, both here and around the world.In Australia, we will launch the highly-anticipated Honda HR-V, which combines fresh styling and dynamic driving in an SUV package,” Mr. Collins said.
“Globally, the new NSX is due to go on sale in the US and of course, we herald our return to F1 racing. We are confident the first race of the 2015 season in Melbourne will provide the perfect opportunity to showcase some of the exciting product we have planned for release in Australia.”
The HR-V will make its Australian debut in February. Watch TMR for our ‘first drive’ review.