Blacksheep, you are more than likely correct, I did say it was a long time ago and it could of been Scampton, either way it was only a suggestion as it was the only thing I could think of that might need a de-tuner and appeared to be the right size for what is there.
Also I did google for RAF Waddington and Blue Steel which seemed to lead one to thinking that some Blue Steel aircraft went to Waddington first, then to Scampton as well as what you describe the other way around, which made me believe that my memory of my fathers work on the missile might be right.
I am sure someone, some when might remember what was mounted on there and its purpose, and why indeed would Waddington need HTP facilities when someone who was there remembers the correct gen, I was a rigger liney on 230 OCU at Scampton and never had anything to do with missiles or anything else associated with them either.