Matriarch, lady wangling prominent place in London (9,4)
I believe the answer is:
admiralty arch
'prominent place in london' is the definition.
I don't know anything about this answer so I cannot tell whether this works.
'matriarch lady wangling' is the wordplay.
'wangling' is an anagram indicator (wangle can mean to manipulate).
'matriarch'+'lady'='matriarchlady'
'matriarchlady' with letters rearranged gives 'ADMIRALTY ARCH'.
Can you help me to learn more?
(Other definitions for admiralty arch that I've seen before include "It stands at the Trafalgar Sq. end of the Mall" , "Entrance to The Mall off Trafalgar Square" , "building in London" , "London landmark between The Mall and Trafalgar Square" , "Feature over The Mall" .)