Cuckoo nested around ace docks area (4,3)
I believe the answer is:
east end
'docks area' is the definition.
'east end' can be an answer for 'area' (I have seen 'Area of London ' mean 'east end' so perhaps 'area' could also mean 'east end'). I am not certain of the 'docks' bit.
'cuckoo nested around ace' is the wordplay.
'cuckoo' indicates anagramming the letters (I've seen this in other clues).
'around' means one lot of letters goes inside another.
'ace' becomes 'a' (abbreviation).
'nested' is an anagram of 'estend'.
'estend' enclosing 'a' is 'EAST END'.
Can you help me to learn more?
(Other definitions for east end that I've seen before include "Cockneyland" , "Cockney's part of London" , "where plates are for standing on?" , "Bow" , "London Cockney area" .)