Director's visit cut short, difficult personal problem having intruded (12)
I believe the answer is:
attenborough
'director's visit' is the definition.
The definition suggests a singular noun which matches the answer.
'cut short difficult personal problem having intruded' is the wordplay.
I cannot really understand how this works, but
'difficult' could be 'rough' (similar in meaning) and 'rough' is found within the answer.
'personal problem' could be 'bo' (informal abbreviation for body odour) and 'bo' is found in the answer.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for attenborough that I've seen before include "David -, zoologist, TV presenter" , "Member of 7 [ORDER OF MERIT]" .)