Police pay? (7)
I believe the answer is:
coppers
'police pay?' is the definition.
Although both the answer and 'pay?' are verbs, they are not in the same form of the verb.
'police pay?' is the wordplay.
'police' becomes 'cop' (cop can mean informally mean a police officer).
'pay?' becomes 'pers' (I can't explain this - if you can you should believe this answer much more).
'cop'+'pers'='COPPERS'
Can you help me to learn more?
(Other definitions for coppers that I've seen before include "Constabulary" , "Receptacles" , "Pence" , "loose change?" , "Old pennies and policemen" .)