Hmmm, sounds just like the Boeing 737 assembly line, where the whole fuselage is manufactured in Wichita, Kansas, then shipped in sections on rail cars across the USA to Seattle to be put together. Distance is much further than Broughton to Toulouse
Yes, Airbus do this stuff already with dispersed sub assembly manufacture around Europe, for example A320 sections are flown into final assembly aboard super-guppys. The difference is that the A380 is bigger than a super guppy so they can't use the aerial route.
