Charge city’s former university admissions body retrospectively (7)
I believe the answer is:
accusal
'charge' is the definition.
(accusal is a kind of charge)
I don't understand how the rest of the clue works.
Can you help me to learn more?
(Other definitions for accusal that I've seen before include "Act of imputing blame or guilt" , "Formal charge of wrongdoing" , "Indictment" .)