Claire Williams has admitted that the British team will struggle at Silverstone.
Driver Lance Stroll has already called the 2018 car "slow", and deputy boss Williams says that it will not get any better than that on the team's home circuit.
"We've brought our handkerchiefs," she joked.
Not just that, Williams's woes will be even worse due to the British summer heat, with Claire saying: "We'll have to open up the bodywork even more, which means even less downforce.
"It's a vicious circle."
Former Williams driver Felipe Massa admits that he is not too disappointed to be missing out on the team's 2018 troubles.
"They're struggling a lot," he told The Sun.
"I really hope they improve and manage to understand their problems. When I see Williams last it's a shame, but I am happy with my decision. I am happy to be away from it and I think it was the right time."
Williams remain bottom of the 2018 constructors' championship with four points.