Williams has been forced to cancel their first filming day for the new FW42 due to delays in getting the car prepared for testing.
The Grove-based team has confirmed the new car was due to hit the Barcelona-Catalunya circuit on Saturday for a filming day, but now won't.
Teams often use the 100km limit permitted during these days, run on specifically designated tyres, to shakedown their cars ahead of pre-season testing to check for any minor issues.
Those plans have now been set aside in order to prioritise the amount of running during the first test of the 2019 season, which begins on Monday, February 18.
A statement from deputy team principal Claire Williams said: "As anyone would expect, we have had an extremely aggressive engineering programme over the winter.
"As such, we have taken the decision not to run our car during our filming day this weekend in order to allow the team to maximise the time at the factory before we head to Barcelona for the first day of the test on February 18."
Williams launched a refreshed livery on Monday alongside new title sponsor ROCKiT.
