Melchett, I believe we are. As for minimum numbers, I doubt it would go to six. I know that was just an example. The Government is aware of UK industry's significant role in the project and has configured (with a slight stumble) the new carriers according to what is coming. But the maintenance of reasonable numbers would certainly not rule out the sort of quiet deals you suggest.
ATG, I truly do hope it works. The fact that I feel free to debate its shortcomings and question its design doesn't mean I don't want it to succeed. But you do raise an interesting point.