A form of need where there was none (4)
I believe the answer is:
eden
'where there was none' is the definition.
The answer is a location as well as being a singular noun. This is suggested by the definition.
'a form of need' is the wordplay.
'a form of' indicates an anagram (the letters need to be in another 'form').
'need' with letters rearranged gives 'EDEN'.
Can you help me to learn more?
(Other definitions for eden that I've seen before include "The best of all gardens" , "The perfect garden in need" , "Someone once seen in Number Ten's" , "happy state" , "prime minister in the past" .)