Prevents going around NE area of London (6)
I believe the answer is:
barnes
'area of london' is the definition.
The definition suggests a singular noun which matches the answer.
'prevents going around ne' is the wordplay.
'prevents' becomes 'bars' (I've seen this in another clue).
'going around' means one lot of letters goes inside another.
'bars' enclosing 'ne' is 'BARNES'.
Can you help me to learn more?
(Other definitions for barnes that I've seen before include "Sir - Wallis, World War Two bouncing bomb inventor" , "- Wallis, British engineer (WWTwo bouncing bombs)" , "Noble partner in US" , "associated with Wallis?" , "London district" .)