Bridget
I've moved your post to its own topic, you replied to a post from more than three years ago!
PIP is not considered as income for ESA or Universal Credit.
From a previous post, you are receiving some sort of ill-health pension, this will be treated as income for both benefits.
For UC it will be consider as Other Income and will be deduced £ for £.
For ESA(CB) there is an £85/week disregard followed by a £1/week deduction for every £2 in excess of the £85.
Gordon
Nothing on this board constitutes legal advice - always consult a professional about specific problems