Can't help thinking any external ordnance would have had been more than slightly detrimental to Concorde's supersonic performance....anyone seen any numbers?
Also I sadly never had the chance to see a Concorde using an AWG-12 or similar (F-4) but did get the chance to point a p*** poor weather radar at a Concorde over the Atlantic a few years ago and I couldn't believe what a big radar target it was ( ? the intake geometry)....
So perhaps it would have ended up as a subsonic target with a radar cross section bigger than a B-52? Maybe not such a good idea unless you were going to throw ALCMs off the thing from over the North Sea.