Dress up those people in East London like Big Ben? (9)
I believe the answer is:
embellish
'dress up' is the definition.
(thesaurus)
'those people in east london like big ben?' is the wordplay.
I cannot really understand how this works, but
'east' could be 'e' (abbreviation) and 'e' is found in the answer.
'like' could be 'ish' (similar in meaning) and 'ish' is located in the answer.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for embellish that I've seen before include "Make more interesting by adding details that may be untrue" , "deck?" , "Make more attractive by adding ornament" , "lard" , "Ornament, improve by adding detail" .)