The abolishing of vertical integration was surely one of the daftest aspects of privatisation
The freight companies, take a different view and they will fight this as they see it as marginalising their business.
Whatever you think every time you remodel the industry it costs money. Arguably, although the split may have been a cause of they safety issues that lead to a number of accidents, a further change if not extremely well managed could lead to another reduction in safety standards, if only because management's eyes are taken off the ball. Major project delivery could also be knocked further off course for the same reason.