Answering the question "where have all the charters gone?"
This got a bit lost in the aftermath of the Paris crash, but a couple of weeks before BA put out the word that some cracks had been found in the spars of the Concorde fleet and they were no longer doing charters. I had been talking to BA about a charter at this time. They said they were concentrating exclusively on the transatlantic flights henceforth, to reduce the number of rotations.