I recently had the opportunity to discuss Ordsall Chord with a barrister. He advised that a high court judge would not deny the right to appeal unless he/she was certain of their ruling. Apparently in judge's circles it is bad form to have an appeal court overrule you.
The barrister felt that the reason the Appeal court overruled the judge was probably not about the Ordsall Chord itself but that one of them may wish to test a particular point of law related to this case that interested them.
I'm sure that Network Rail took legal advice before starting work whilst the appeal was pending. Now the appeal has been rejected Network Rail must surely be on firm ground to proceed with the project.
An interesting point is Whitby's costs. As I understand it thus far his costs have been limited to £5,000, a tiny percentage of the costs that he has imposed on others, including us taxpayers. If he wishes to take the issue further he could be liable for massive costs and so may not wish to.