Root around area in wood, part of London (7)
I believe the answer is:
mayfair
'part of london' is the definition.
(I've seen this before)
'root around area in wood' is the wordplay.
'root' becomes 'yam' (I have seen 'Tropical root ' mean 'yam' so perhaps 'root' could also mean 'yam').
'around' is a reversal indicator.
'area in wood' becomes 'fair' (I am not sure about this - if you are sure you should believe this answer much more).
'yam' backwards is 'may'.
'may'+'fair'='MAYFAIR'
Can you help me to learn more?
(Other definitions for mayfair that I've seen before include "Go immediately after this" , "expensive area of London" , "address in fashionable area" , "West End area" , "Area of west London" .)