Hi CountryBumpkin,
ESA is different to Universal Credit, but based on my own experiences of this - Me receiving PIP has not helped my UC application at all to be placed in the Limited Capability for Work Related Activity Group. It was 2 different assessments, and despite being awarded PIP for 2nd year in a row, I am still contesting my UC which has been going on not far short of a year now.
One of the other mods may know, but I'd say based on mine, having Enhanced for PIP (both elements) will not improve your chances of being put in the top tier support group.
I was told however, after being put in the middle group, that I no longer had to supply fitnotes. I put them in for 10 months, before I was told I didnt have to anymore back in August, however I still do keep obtaining them from my GP, just incase the job centre try to start forcing me into something that I simply am unable to cope with.
Regards, Chris.
Nothing on this board constitutes legal advice - always consult a professional about specific problems 
