Susie Wolff will get to drive in two free practice one sessions during the 2014 F1 season as part of an 'expanded' development driver role with the Williams F1 team.

Susie joined the Grove-based outfit back in April 2012 and will now become the first female driver to compete in a F1 Grand Prix session in over two decades, building on her run in last year's Young Drivers Test at Silverstone.

She will also continue to work in the Williams simulator to help further develop the Mercedes-powered FW36, which will be raced this year by former Ferrari man Felipe Massa and Valtteri Bottas.

"I'm grateful for the support and belief Williams continue to show in me and 2014 promises to be a very important milestone in my career," said the 31-year-old, who previously spent seven seasons racing in the DTM and who was twice nominated for the prestigious BRDC Young Driver of the Year Award.

"My responsibilities within the team have steadily increased as I have proved myself, culminating in the opportunity to test the car at Silverstone and conduct straight line aero tests last season.

"Competing in two FP1 sessions, alongside an additional full test day this season will be a big step and I am looking forward to the opportunity to get behind the wheel of the FW36 on a Grand Prix weekend. It's a challenge that I will relish and it will be a great chance for me to continue assisting the team."

"Susie has become a valued member of our driver line up and 2014 will see her take on more responsibilities as we seek to make a strong step forward in performance," added Pat Symonds, Williams F1's chief technical officer.

"Susie has demonstrated a natural talent for developing a car and providing strong feedback and these sort of characteristics will be key this season as teams seek to quickly understand and refine the radically overhauled 2014 cars."