“The PIP Assessment Guide in particular is no more than the DWP’s view of how the regulations once enacted were thought to apply for the benefit of those carrying out the PIP assessments. Its legal worth as a permissible aid to statutory construction therefore seems negligible, if not non-existent”
“The question is this: would this ‘aid’ usually or normally be used by someone without any limitation in carrying out this particular aspect of the activity? If it would, the ‘aid’ is not assisting to overcome the consequences of an impaired function that is involved in the activity and its descriptors. So, using an ordinary wooden spoon to stir hot food while it is cooking is using an ‘aid’ in the everyday sense of the word, but it would not assist in overcoming the consequences of any loss of function, because it would be used anyway.”