The Williams Formula One team will present their 2005 driver lineup in Bahrain on January 7, the team said on Monday.

Next season's BMW-powered FW27 car will be launched at Spain's Valencia circuit on January 31.

Williams have already signed Australian Mark Webber [ Images ], who will have his first outing with the 2004 championship fourth-placed team at Barcelona's [ Images ] Circuit de Catalunya on Tuesday after leaving Jaguar.

The team, who won the last race of the year with Colombian Juan Pablo Montoya [ Images ] in Brazil [ Images ], will also be testing Britain's Anthony Davidson [ Images ] and Germany's [ Images ] Nick Heidfeld [ Images ] over the coming weeks as they seek to fill the vacant second seat.

Brazilian Antonio Pizzonia, the team's test driver who competed in four grands prix this year as a stand-in for injured Ralf Schumacher, is considered the frontrunner for the most competitive drive still available.

Ralf Schumacher and Montoya have left Williams for Toyota [ Images ] and McLaren [ Images ] respectively while Spanish test driver Marc Gene has moved to Ferrari [ Images ].

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