An interesting program indeed, though it might have been nice to see them putting the interior back in, rather than the two presenters leaving Cardiff with a gutted airframe and coming back to a sumptuous newly fitted first class. A bit like Blue Peter's "and here's one I made earlier.."
That was to avoid potential embarrassment in case, having re-assembled those "20,000 parts" (sic), they found they had a few left over.