£1000 bills for elderly males (8)
I believe the answer is:
grandads
'elderly males' is the definition.
The definition and answer can be both people as well as being plural nouns.
Perhaps there's an association between them I don't understand?
'ps1000 bills' is the wordplay.
'psg000' becomes 'grand' (I can't explain this - if you can you should give a lot more credence to this answer).
'bills' becomes 'ads'.
'grand'+'ads'='GRANDADS'
'for' is the link.
Can you help me to learn more?
(Other definitions for grandads that I've seen before include "Old men having" , "Your mother and father's fathers" .)