Silverstone managing director Stuart Pringle says they're in talks with the UK government about getting a quarantine exemption.
The circuit is hoping to host back-to-back Formula One races in late July and early August and are asking for teams not to have to go through a 14 day quarantine on entering England.
Race organisers are hoping that period can either be shortened or waived in order to allow drivers and their teams to arrive closer to the races.
"We are still liaising with Government but I am encouraged that there is progress," Pringle told Sky Sports.
"It will take a few weeks for the way to become clear but it definitely feels we are moving in the right direction.
"We have got our original dates in mid to late July but we have got a degree of flexibility in August. I don't think it will be a problem finding dates for two races.
"What we need is the green light from Government and that will take time. Formula One as a championship needs that quarantine exemption.
"For Silverstone we can probably move into August with our dates but it is essential there is clarity on the quarantine situation ahead of that."
The Formula One season is set to get underway with two races in Austria in July.
