The Department for Work and Pensions (DWP) have overall responsibility for PIP, and directly manage the claim, decision making and payments part of it, as well as the overall policy that sets out how it works. The assessment part of the PIP process, which happens when you first claim PIP as well as periodically while you receive it, is managed by assessment providers, one of which is us (we cover Scotland, the north of England and the south of England including London).