Disgusting rebel in Gateshead (9)
I believe the answer is:
revolting
'disgusting' is the definition.
(I know that disgusting can be written as revolting)
'rebel in gateshead' is the wordplay.
'rebel' becomes 'revolt' (revolting is a kind of rebelling).
'gateshead' becomes 'g' (head letter of 'gates').
'revolt'+'in'+'g'='REVOLTING'
(Other definitions for revolting that I've seen before include "rioting" , "Rising in rebellion" , "Disgusting" , "Loathsome" , "Repulsive" .)