Ross Brawn masterminded all seven of Michael Schumacher's world titles and won the championship with his own team in 2009
Formula 1 sporting boss Ross Brawn is "very optimistic" about Silverstone still being part of the sport.
The future of the British Grand Prix has been uncertain since Silverstone's owner activated a break clause in July to stop hosting the race after 2019.
Snow settled on the circuit during day three of winter testing at Circuit de Catalunya
The third day of pre-season testing was a write-off as a result of snow, rain and freezing weather at Spain's Circuit de Barcelona-Catalunya.
The start was delayed for more than three hours because the medical helicopter was unable to fly in the poor conditions after overnight snow.
Fernando Alonso had done just six laps before spinning into the gravel
McLaren had a difficult start to Formula 1 pre-season testing when Fernando Alonso's car lost a wheel after just six laps in Spain.
The two-time champion lost control at the last corner of Barcelona's Circuit de Catalunya when his right rear wheel came off.
Daniel Ricciardo crashed Red Bull's new 2018 Formula 1 car during its first test, it has emerged.
The Australian damaged the RB14 during a private filming session, limited by regulations to 100km (62 miles), at a wet Silverstone on Monday.
Renault are one of three car manufacturers competing in F1
Renault say they are aiming to make further progress towards the front of the grid after unveiling their 2018 car.
The French company has set its Formula 1 team the target of winning races and challenging for the title by 2020.
