Leader limiting a politician's time in N London suburb (9)
I believe the answer is:
hampstead
'london suburb' is the definition.
The definition suggests a singular noun which matches the answer.
'leader limiting a politician's time in' is the wordplay.
'leader' becomes 'head' (head is a kind of leader).
'limiting' means one lot of letters goes inside another.
'politician's' becomes 'MP's' (Member of Parliament).
'time' becomes 't' (abbreviation).
'in' means one lot of letters goes inside another.
'a'+'mps'='amps'
'head' going around 'amps' is 'hampsead'.
'hampsead' enclosing 't' is 'HAMPSTEAD'.
'n' acts as a link.
Can you help me to learn more?
(Other definitions for hampstead that I've seen before include "part of London" , "London district" .)