Dastardly con destroyed police headquarters (8,4)

I believe the answer is:

scotland yard

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'police headquarters' is the definition.
'Scotland Yard' can be an answer for 'police' (thesaurus). I am not certain of the 'headquarters' bit.

'dastardly con destroyed' is the wordplay.
'destroyed' indicates an anagram.
'dastardly'+'con'='dastardlycon'
'dastardlycon' is an anagram of 'SCOTLAND YARD'.

Can you help me to learn more?

(Other definitions for scotland yard that I've seen before include "detectives" , "Metropolitan Police HQ" , "11 13 HQ" , "Old London police HQ" , "London force HQ" .)

I've seen this clue in The Times.

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