The video isn't Flying Legends, as the pleasure flying Rapides and Tigers decamp to the far Western end of the airfield for the show and wouldn't appear on the flightline in that position.
It's most likely the BoB 70th anniversary show in September 2010, which was notable for having 16 Spitfires together for the first time in a long while.
A certain VS pilot was in charge of proceedings that day, probably his greatest achievement was getting fifteen other Spitfire pilots to do exactly as they're told........
