Claire Williams says the team won't get carried away with its targets for 2015 after such an impressive season last year.

Williams finished third in the constructors' championship and often had the second fastest car, with Felipe Massa the only driver other than Lewis Hamilton and Nico Rosberg to take a pole position, while he also pushed Hamilton close for victory in Abu Dhabi. However, while deputy team principal Williams retains the goal of winning races in 2015, she says the team will not set itself unworkable aims.

"Realistic hopes... we always are realistic at Williams, rather than getting carried away," Williams told Esquire. "We made such a progression last year, and this year we need to build on that.

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"We're here in Formula One to win, and we didn't win a race last year. So clearly one of our ambitions is to win races and then to build on the progress that we've made and to get closer to the front-runners, close that gap and one day fight for another world championship. So improvement. Improvement would be a summary."

And having overseen such a large turnaround in fortunes from 2013 to 2014, Williams highlighted last year's Abu Dhabi Grand Prix - where the team secured third in the constructors' - as the best moment of her career.

"There was a lot riding on it. We'd done a lot of hard work over the 18 months prior to that to turn the team. Both our drivers doing what they needed to do in order to achieve third position was fantastic. It was just the most amazing race weekend that I've ever experienced and we got both our drivers on the podium as well. We achieved all we needed to, so that was my best memory."