GP2 driver Alex Lynn has been retained as Williams Martini Racing’s development driver for the 2016 Formula 1 season.
The British racer joined the team in the development driver role last year, completing simulator work and running at the Barcelona in-season test.
Having won the GP3 title in 2014, Lynn debuted in GP2 last year with DAMS, finishing sixth overall with two wins. He remains at the team and will focus on mounting a championship challenge in 2016.
"I am really delighted to continue in my development driver role with the team this season and remain grateful for their on-going support,” he said.
"I relish the opportunity to build on the hard work I put in last year, to continue helping develop the Formula 1 car and gaining further knowledge of the inner workings of the Williams team from both a technical and human perspective.
"With the team’s blessing and support, my main focus this season will be to fight for the GP2 title. I am determined to prove myself worthy of graduating to become a fully-fledged Formula 1 race driver at some point in the not too distant future."
Deputy team principal Claire Williams added: "After a really encouraging first season with the team, we are pleased to be able to continue working with Alex in 2016.
"Alex played an important role in helping develop the team’s race cars in 2015, while at the same time demonstrating his talent with a strong debut season in GP2. We’re looking forward to seeing him progress this year, both within the team and as he fights for the GP2 title."