Williams has announced Paul di Resta as its official reserve driver for the 2016 season.

The Scot made his Formula One debut in 2009 as a test driver with Force India, after winning the European Formula 3 Championship in 2006.

He subsequently secured the DTM title in 2010 and in 2011 made his F1 race debut with Force India where he spent three seasons with the team, scoring a total of 121 points.

Di Resta will spend extensive time with the team at races to ensure he is fully accustomed to the controls and procedures of the Williams FW38, should he be required to step into the cockpit during the season. He will also spend time integrating himself into the team with some simulator sessions to ensure he is fully prepared for his role.

"I am delighted to be joining Williams as reserve driver and look forward to the 2016 season," said di Resta. "It will be a busy year combining both driving in DTM with Mercedes AMG, and attending the Formula One Grands Prix in my new reserve driver role. I will be giving my full support to both and look forward to the exciting possibilities the year has ahead. I would like to thank Claire and Williams for the opportunity to be part of the team."

"We are delighted to welcome someone with Paul's experience to the team," added Claire Williams, Deputy Team Principal. "Having competed in 58 Formula One races throughout his career Paul's racing knowledge will be invaluable.

"We are also confident that given his recent Formula One and current DTM experience Paul will be able to confidently step into the FW38 and assist with our 2016 campaign."