Beefy individual thumped controversial MP (6,8)
I believe the answer is:
belted galloway
'thumped controversial mp' is the definition.
I know nothing about this answer so I cannot tell whether it can be defined by this definition.
'beefy individual' is the wordplay.
I cannot really see how this works, but
'individual' could be 'ted' (Ted is an example) and 'ted' is found within the answer.
This explanation may well be incorrect...
Can you help me to learn more?
(Another definition for belted galloway that I've seen is " Cow".)