The special anniversary parade, dubbed 911 x 911, to mark 50 years of the Porsche 911 at this summer’s Silverstone Classic (26-28 July) has proven so popular that it’s already a complete sell out.

To celebrate its 50th birthday, a massive on-track parade of 911 Porsche 911s is being staged as one of the many highlights at the annual Silverstone Classic. The cavalcade has proved so popular that it has already attracted more than 1000 registrations meaning the organisers now have closed entries.