Williams deputy team principal Claire Williams says there is a "very clear" target for the team in 2015 "and that's winning races".

While Mercedes was dominant this season, Williams scored nine podiums and was the only team to beat Mercedes to a pole position courtesy of Felipe Massa in Austria. Having delivered such a big turnaround from a dismal 2013 and proceeded to match the development rate at the front of the grid, Williams said this season should provide the platform for the team to make a big step forward next year.

"I think it's very clear where we want to be next year and that's winning races," Williams said. "The guys know in engineering and the rest of the factory the job that they've got to do in order to achieve that. I think we've shown that we've closed the gap to Mercedes over the second half of this season, so I don't see why we can't close it.

Related Articles

"But it's all about what your competitors are doing. We don't know where Ferrari are going to be, we don't know where Red Bull are going to be, we don't know what's going to happen with the engine regulations ... So it's all slightly up in the air at the moment but that's part of the excitement of Formula One."

While the team ended the season with the second quickest car at many races - highlighted by Felipe Massa chasing down Lewis Hamilton in Abu Dhabi - Williams said there wasn't a feeling of a missed opportunity to finish second in the constructors' championship.

Asked if the team had a bittersweet feeling looking back over 2014, Williams replied: "No we don't.

"This is amazing for our team, this is magic for our team. I'm so proud of everybody. To come from P9 to P3, that's an amazing transformation, probably one of the biggest transitions in motorsport history. To do that, to effect that kind of turnaround, there's nothing bittersweet about this. We could have done better, [but] this is job well done."