British driver Sam Bird conducted a series of aerodynamic tests for the Williams team in what was his first taste of Formula One machinery.
The tests took place over a two-week period at the Kemble airfield in Gloucestershire, where the F3 driver drove this year's FW29 car.
"The experience was amazing and I would like to say a huge thank you to Sir Frank Williams and the whole team for giving me the opportunity," said Bird.
"This has been a very valuable experience; I have learned a lot in the last two weeks which I am sure will stand me in good stead for my future."
Team boss Frank Williams added: "Sam Bird has been very valuable during the course of our aerodynamic testing in the past two weeks.
"He has carried out his duties in the cockpit of the FW29 professionally and competently and I would like to thank him for his contribution to the development programme."