English politician cleaned out Harley, getting same sort of disease (9)
I believe the answer is:
emphysema
'disease' is the definition.
(emphysema is a kind of health problem)
'english politician cleaned out harley getting same sort' is the wordplay.
'english' becomes 'E' (abbreviation).
'politician' becomes 'mp' (Member of Parliament).
'cleaned out' says to hollow out the word (remove centre letters).
'getting' says to put letters next to each other.
'sort' is an anagram indicator.
'harley' with its centre removed is 'hy'.
'same' with letters rearranged gives 'sema'.
'e'+'mp'+'hy'+'sema'='EMPHYSEMA'
'of' is the link.
(Other definitions for emphysema that I've seen before include "Respiratory disease" , "Lung problem causing breathlessness" , "Distressing lung disease causing breathlessness" , "Serious lung condition" , "Lung condition causes bad ESP mayhem" .)