150 miles each way each day?? have you followed them to do that each day, that would be tiring on its own, let alone fatigue from parkinsons?.Are you still employed with them or finished?.
You could make an appointment too see citizens advice or your local support worker before going too the job centre to see where you stand personally.
ESA is designed for those unfit for work(support group) or those who may in the future (work related activity group, wrag) so if you claim that you'll have to think about your status now and in the near future, it pays 73.10 pre assessment or 102 currently when assessed in either group, with a little more if you are placed in the support group (£125), this changes in april 2017 for wrag new claimants just 73.10, so consider wisely are you fit for work?.
Pip is designed to meet extra costs disabilities and illnesss such as ours 73.10 or 125 isn't going to cover much is it in reality if you were earning 1200 a month, whether in work or not, you could claim it for example to keep yourself in a way in work(or money) at least in a lesser job, there are two rates standard and enhanced for daily living and mobility. standard lving is 52? and enhanced 80 i think? mobility standard is 20 something and enhanced 50 something. there is a assessment for that too and you have to wait too see what you are awarded.