Air France have announced the intended new homes for their Concorde fleet:
Concorde 205 - F-BVFA - destined for the Steven F. Udvar-Hazy Center at Washington Dulles Airport, part of the Smithsonian
Concorde 207 - F-BVFB - destined for the Auto und Technik Museum, Sinsheim in Germany, next to their Tupolev Tu-144. It will fly to the nearest airfield, be dismantled, and transported to the museum on a barge, in the same fashion as their Tu-144
Concorde 209 - F-BVFC - destined to go on display outside the Airbus A.380 plant at Toulouse
Concorde 213 - F-BTSD - destined to go to the Musee de l'Aire at Le Bourget, and may be delivered during the Paris Air Show
Concorde 215 - F-BVFF - destined to go on display at Charles de Gaulle airport, Paris
Interestingly, two of the sites listed (Toulouse and Le Bourget) already have Concordes on display. As regards the British Airways fleet, Filton, Brooklands, Heathrow, Cosford and Seattle seem like the front runners in the race to acquire one.