Nyck de Vries was unable to complete simulator work ahead of next weekend’s Singapore Grand Prix.
The Dutchman will be in Singapore as a reserve in case Alex Albon hasn’t fully recovered from his appendectomy.
De Vries attempted to return to Grove to run in the simulator but travel regulations since the UK left the European Union have prevented the 27-year-old from entering the country with a European identity card.
As a result, he will not be able to prepare for his potential racing duties in Singapore as well as he would have liked.
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The 2021 Formula E champion replaced the Thai Brit when he contracted appendicitis last time out at Monza and finished a brilliant ninth place on his debut.
After the operation, Albon suffered respiratory failure that put him in intensive care, but recovered overnight and was sent home to recover.
The goal for him and Williams is to be ready for the Singapore Grand Prix, but if he’s not fully recovered, de Vries will be waiting in the wings.
The 61-lap race at Marina Bay Street Circuit is one of the most demanding on the calendar, making it difficult for a driver who is not fully fit after major surgery.
In a recent social media video, Albon revealed that he had started running under his own power and was doing everything he could to prepare for the next race.
“I’m feeling pretty good, I’m feeling okay,” he explained.
“Obviously I had a little problem on Saturday and the doctors did a great job and I am very grateful that they got me in good health and out of the hospital by Tuesday.
“Since I’ve been in Monaco, I’m starting to walk around. The goal is to be ready by Singapore, which will be tough; It’s one of the toughest races we go to so not an easy one but let’s aim high and see what happens.
READ: Will Nyck de Vries replace Nicholas Latifi at 2022 Singapore Grand Prix?
“And just a quick message to say thank you for all the nice messages,” he added. “I’ve read them all – or as many as I can, and it means a lot to me. Thank you, hope to see you in Singapore and in peace.”
Albon has inked a multi-year deal with the Williams team, while Nicholas Latifi is currently out of contract at the end of the season.
He has been linked with the Canadian’s seat following de Vries’ exceptional performance at the Italian Grand Prix.