Williams has appointed ex-Renault tester Jack Aitken as its official reserve driver for the 2020 Formula 1 season.
Aitken revealed on Monday that he had split from Renault, having initially joined its Academy in 2016, prior to a spell as its test driver.
On Tuesday Williams confirmed that it has recruited Aitken to act as back-up to race drivers George Russell and Nicholas Latifi.
Aitken will undertake extensive simulator duties and will attend all grands prix with Williams; he is also in line to make his FP1 debut at a yet-to-be-determined round.
“It is a great honour to join Williams Racing as its Reserve Driver for the 2020 season,” said Aitken, 24.
“Williams is a team with strong heritage, and continued longevity, and I’m looking forward to directly contributing to their development through my simulator and testing work.”
Aitken, runner-up to Russell in the 2017 GP3 Series, raced full-time in Formula 2 last year, classifying fifth in the standings.
Aitken joins a roster of drivers at Williams that includes tester Roy Nissany, and academy members Dan Ticktum and Jamie Chadwick.
Aitken has not yet communicated his racing programme for 2020.