@Tailsar
I've a feeling that the reason Weybridge didn't get UK government support for the 3.11 - even after the major changes to the A300 after RR pulled out - was simple shortage of money, and perhaps a cynical attitude of "If we go in with Europe and the thing fails, we stand to lose less than if we go into competition with it".
Being no enthusiast for putting engines on the back end of a larger aircraft than Caravelle/DC-8/One-Eleven, I didn't think that putting 2 RB211s was the right way to go, but I'm no expert !