RIAT is known for putting together formations of different types to celebrate certain events.  The fiftieth anniversary of the first flight of Concorde resulted in two display teams getting together.  Concorde was an Anglo-French collaboration and so was the celebration in this case.  The Red Arrows and the Patrouille de France both fly formations to represent Concorde so, for this joint effort, both teams got airborne and flew their two Concorde formations in line astern.  They made passes in each direction with the national anthems of each country playing – one on the first pass and the other on the second.  It was a simple demonstration but an impressive one all the same.