A Tory leader pockets profits? That's touching! (7)
I believe the answer is:
against
'touching' is the definition.
(thesaurus)
'a tory leader pockets profits?' is the wordplay.
'tory leader' becomes 't' (I've seen this in other clues).
'pockets' indicates putting letters inside.
'profits?' becomes 'gains' (profit is a kind of gain**).
'a'+'t'='at'
'at' placed around 'gains' is 'AGAINST'.
'that's' acts as a link.
(Other definitions for against that I've seen before include "Opposed" , "Opposite to" , "antagonistic" , "In competition with" , "Abutting" .)