Hello Dick,
I'll trawl through my Vulcan "stuff" to see if there's anything useful about Blue Steel, and let you know.
As for "The Concorde Connection" - I'm not convinced that there is one (although I may be wrong!). Yes, Concorde DOES have a (very) developed delta-planform wing, and Olympus engines, but both are VERY different animals to those fitted to Vulcans! I guess that it's entirely likely there was some consultation at the design stage, but can't say that I've ever read anything to that effect.
One thing that both aircraft share is the strong impression of power and grace - both in the air and on the ground. It's good to hear that one of the remaining French Concorde airframes is being restored to "taxiing" condition - pity WE can't do that to one of ours!
Good luck to your work colleague

- as you say, he clearly displays good taste in his choice of project!
Regards
Paul