“Obviously we’ve had a really good start to the season. Really enjoyed my time here. I’m really happy for the future.
“For the rest of the season we have keep our heads down. We’re going to focus on maximising the car and doing the best job we can. To know that it goes beyond that is very exciting.”
“Alex brings a great blend of skill and insightful learnings that will help bring the team greater success in the future,” said Williams team boss Jost Capito.
“He’s a fierce competitor, has proved a popular and loyal team member and we are delighted that he will provide a stable base for us to continue to develop in this new F1 car era.”