The 25-year-old was also associated with Renault as a development driver, but has now switched to the Grove outfit where he will assist the team with simulator work on their FW41 car.
Briton Oliver Rowland says he is "immensely proud" as he is named Williams young driver for 2018.
McLaren turned to the history books as they released their last F1 car ahead of the 2018 season with their MCL33 boasting an orange and blue colour scheme the team first used in F1 50 years ago.
Mercedes have unveiled the new car they hope will land them the 2018 F1 title. Last year's winner Lewis Hamilton helped launch the Mercedes AMG F1 W09 EQ Power+, which features a cockpit halo to protect the driver, at Silverstone.
McLaren reveal the car they hope will return them to at least relative competitiveness in the 2018 season.
Jolyon Palmer says the integration of the halo cockpit protection system “is a step too far” for Formula 1.
Mercedes have unveiled their newest car, the W09. The team hope it can deliver them a record-equalling fifth consecutive world championship double this year.
Ferrari have revealed their new car that they hope in the hands of Sebastian Vettel and Kimi Raikkonen can end Mercedes' dominance of Formula One.
Mercedes boss Wolff does not like the car his team are set to use in the upcoming Formula One season. Hamilton helped launch the W09 which features a cockpit halo to protect the driver.
Lewis Hamilton says he hopes to sign a contract extension with Mercedes before the new season starts. The 33-year-old has been with the German team since 2013 and has three world titles there.
Lewis Hamilton says he is aiming to set new standards in 2018 as he heads into the new Formula 1 season looking to add to his four titles.
Lewis Hamilton has been joined on the Mercedes launch day by young driver Billy Monger as himself and team-mate Valtteri Bottas unveil their new car ahead of the upcoming Formula One season.
Mercedes reveal the new car they hope will claim a record-equalling fifth consecutive world championship double this year.
Toro Rosso driver Pierre Gasly says the team had no problems on the first day of running with their 2018 car and new engine partner Honda.
Daniel Ricciardo's crash in the new Red bull at Silverstone reminds us of others who have had a prang, early doors.
Daniel Ricciardo crashes Red Bull's new 2018 Formula 1 car during its first test, it has emerged.
Current champion Lewis Hamilton must be considered the favourite to win his fifth Formula One title this season, says Nigel Mansell. Hamilton, 33, is due at Silverstone on Thursday.
EXCLUSIVE: A British energy drinks company are in talks to buy Formula One team Force India. Sportsmail understands that Rich Energy are leading a consortium.
Aitken, 22, from London, makes the step up from the GP3 championship - in which he finished runner-up to George Russell - to land the back-up drive to Nico Hulkenberg and Carlos Sainz.
Daniel Ricciardo crashed Red Bull's new Formula One car on its track debut, it emerged on Tuesday, but the team said the damage was minor and there would be no issues for testing in Spain.