It is indeed the Concorde. This one is located at the National Museum of Flight in East Fortune, Scotland. Call sign G-BOAA, Alpha Alpha was the FIRST Concorde for British Airways. It has a long and distinguished history with British Air and it could easily be said to be the showpiece of the museum.
I'm only sorry it wasn't flying.
If you get a chance to visit the museum, please do. Along with Concorde, East Fortune has quite an array of flying machines. http://www.nms.ac.uk/concordeexperience_1.aspx