That "sustained Mach 2.05" is only achieved at over 50,000 feet. I don't have the data to hand, but I'm fairly sure I have a reference at home suggesting Concord's max sustainable sea-level speed on dry power is subsonic. TSR2 was intended to do a sustained Mach 1.3ish a ground-hugging altitudes. Concord also has all the manoeuverability of a steam train.
The whole "military concord" thing is strictly plane-spotter wet-dream stuff.
PDR