Hello,
OK, so this may be my French pride speaking, but to list the Concorde only under BAC is somewhat inaccurate.
The Concorde was a joint project between two major aircraft manufacturers, namely BAC (now BAE Systems) and Aérospatiale (now EADS).
As such, it would be more appropriate to list the Concorde under both manufacturers, and if this is not possible due to system constraints, to list it under a seperate manufacturuer listed for example "BAC / Aérospatiale".
Ciao,
Thunderstruck.