Rob Bain, the chief executive of Silverstone's leaseholders, Octagon Motorsports, has resigned in the aftermath of a stinging attack from Bernie Ecclestone on the organisation of Sunday's (July 7) British Grand Prix.

Ecclestone, who has been one of Silverstone's most high profile critics, attacked the management of the crowds and signage as being sub-standard, claiming that the public were 'wandering about' and that they were not being 'looked after'.

Silverstone was condemned two years ago for poor access and facilities which caused major traffic congestion, although the circuit has subsequently invested heavily in improving the situation. As part of a traffic-reducing initiative, Octagon decided to cut the crowd to 60,000, but has faced criticism for creating half-empty stands, as ticket prices were raised.

Ecclestone responded: 'We'll see what happens,' when questioned about Silverstone's future on the F1 calendar, prompting speculation that the British Grand Prix may make way for a new event.

However, Sir Jackie Stewart, president of the British Racing Drivers' Club and Ferrari technical director, Ross Brawn were quick to defend the improvements made over the past two years. Stewart said: 'We have made such big steps forward. The master plan for Silverstone to create a centre of excellence is on course.'

On Bain's resignation, Stewart added that Eccelstone's criticism might not have necessarily been a factor: 'I don't think that's what tipped the balance. I think he basically made up his mind that this was something he had been in long enough.'