Thanks for the clarification, so either way why did the Vickers T.441 C and/or British built B-29 project not proceed and perhaps as a spin off question, was there ever a serious intent to operate the B-29 in Europe?
I have heard of Project Ruby to use a B-29 with Grand Slam over Germany?
Many speculate the UK runways were not long enough but when the mission fuel uptake for ETO is nothing like that required for Pacific Theatre runway requirements would not have been so onerous.