One politician with journalists, hindered (7)
I believe the answer is:
impeded
'hindered' is the definition.
('impede' can be a synonym of 'hinder')
'one politician with journalists' is the wordplay.
'one' becomes 'i' (Roman numeral).
'politician' becomes 'MP' (Member of Parliament).
'with' means one lot of letters go next to another.
'journalists' becomes 'eded'.
'i'+'mp'+'eded'='IMPEDED'
(Other definitions for impeded that I've seen before include "Obstructed" , "Blocked (progress)" , "Held up" , "Hampered" , "Got in the way of" .)