Conservative compassion after leader deposed in urban area (4)
I believe the answer is:
city
'urban area' is the definition.
(city is a kind of urban area)
'conservative compassion after leader deposed' is the wordplay.
'conservative' becomes 'c' (abbreviation commonly used in UK politics).
'compassion' becomes 'pity' (pity is a kind of compassion).
'after leader deposed' means to remove the first letter (the letter which leads the word is removed).
'pity' with its first letter removed is 'ity'.
'c'+'ity'='CITY'
'in' is the link.
(Other definitions for city that I've seen before include "Urban centre" , "Major residential area" , "Big conurbation" , "Major town" , "See 10" .)