"The budget is always the most important thing -- securing more revenue than I did last year, " Williams, whose father Frank Williams founded the team, told Formula One's official website.

CNN: Tech guru Lowe back in the fast lane

It's effectively the home circuit of one of the most successful formula one teams run by Sir Frank Williams who joins us from the company's headquarters in Didcot.

BBC: Breakfast with Frost

Rosberg, son of 1982 Formula One world champion Keke, is out of contract with Williams at the end of the season.

BBC: Rosberg targets switch to McLaren

The three-time champion, revered as one of the greatest Formula 1 drivers of all time, died when he crashed his Williams in the 1994 San Marino Grand Prix at Imola.

BBC: Senna seals F1 drive with Campos