Any way to prove that you are too tired to "mobilise" in your wheelchair for more than 50m? Or do you just have to hope they believe you?
Can they just tell you to go lift weights for 6 months and you'll be fit for work?
As with anything to do with the WCA assessment, it would be the result of your statements on the ESA50, any evidence you submit, and whether the limitation is consistant with your conditions.
Gordon
Nothing on this board constitutes legal advice - always consult a professional about specific problems