BSE in facecloth worried high ranking official (5,9)

I believe the answer is:

chief constable

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'high ranking official' is the definition.
The definition suggests a singular noun which matches the answer.

'bse in facecloth worried' is the wordplay.
'worried' is an anagram indicator (worry can mean to interfere with or disturb).
'bse'+'in'+'facecloth'='bseinfacecloth'
'bseinfacecloth' is an anagram of 'CHIEF CONSTABLE'.

Can you help me to learn more?

(Other definitions for chief constable that I've seen before include "Bobby's superior" , "Busy high up" , "law enforcer" , "Police officer" .)

I've seen this clue in The Independent.

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