Capital Lima — placed on both sides of delta (6)

I believe the answer is:

london

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'capital' is the definition.
(capital of the United Kingdom)

'lima placed on both sides of delta' is the wordplay.
'lima' becomes 'L' (phonetic alphabet: alpha, bravo, charlie etc.).
'placed' becomes 'on' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'both sides of' means one lot of letters goes inside another (one word stretches round both sides of another).
'delta' becomes 'd' (phonetic alphabet: alpha, bravo, charlie etc.).
'on'+'on'='onon'
'onon' going around 'd' is 'ondon'.
'l'+'ondon'='LONDON'

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(Other definitions for london that I've seen before include "US writer" , "English capital" , "Construction across the Thames near the Monument" , "British capital" , "England's capital city" .)

I've seen this clue in The Hindu.

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