Pressed about part of UK being penalised (8)
I believe the answer is:
punished
'being penalised' is the definition.
('punished' can be similar in meaning to 'penalized')
'pressed about part of uk' is the wordplay.
'pressed' becomes 'pushed' (pushing is a kind of pressing).
'about' is an insertion indicator.
'part of uk' becomes 'ni' (Northern Ireland).
'pushed' placed around 'ni' is 'PUNISHED'.
(Other definitions for punished that I've seen before include "Maybe flogged" , "grounded perhaps?" , "Disciplined" , "Chastised" , "Impose a penalty on" .)