Formula 3 star Zak O'Sullivan will make his official debut at an F1 event with Williams at the Abu Dhabi Grand Prix later this month.
The Briton, who joined Williams' driver academy last year ahead of his rookie F3 season with Carlin, will take part in the first practice session, standing in for Alexander Albon.
For this year's F3 campaign, O'Sullivan switched to Prema Racing and ended the year second in the Drivers' Championship with four race wins under his best.
His run comes despite Williams having completed its fulfilment for driver rookie runs, with Logan Sargeant's appearances in Bahrain and Saudi Arabia counting towards the quota.
“I’m really excited to participate in FP1 at Abu Dhabi,” said O'Sullivan.
“I can’t wait to get behind the wheel of the FW45 for the first time and get some good mileage under my belt.”
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O'Sullivan will remain with the team in Abu Dhabi and take part in the post-season rookie test with Williams.
“In addition to that, I’m returning to the car for the post-season rookie test to further my development with the team,” he added.
“Huge thanks to Williams Racing for the opportunity and for putting their faith in me to drive the 2023 car.”
The 18-year-old will be joined by fellow Williams junior Franco Colapinto who will be handed his F1 debut at the test from the Yas Marina Circuit.
“I am extremely grateful to Williams Racing for giving me the opportunity to drive an F1 car in only my first year in the Academy,” Colapinto said.
“I’ve been dreaming of this day since I was a kid and have been working really hard for this. To have this chance at the official young driver test is a real honour.
“Thank you to the team for entrusting me with the FW45.
“Being part of the Academy this year has opened my eyes in so many different areas and I feel ready to make this step. I can’t wait.”