Rich now poor in East Anglia (7)
I believe the answer is:
norwich
'east anglia' is the definition.
Both the definition and answer are singular nouns.
Maybe you can see an association between them that I don't see?
'rich now poor' is the wordplay.
'poor' indicates an anagram.
'rich'+'now'='richnow'
'richnow' anagrammed gives 'NORWICH'.
'in' acts as a link.
Can you help me to learn more?
(Other definitions for norwich that I've seen before include "City on the River Wensum" , "See" , "County town in E. Anglia" , "Norfolk city" , "E. Anglian county town" .)