Friends much upset by a skinhead (5)

I believe the answer is:

chums

'friends' is the definition.
(chum is a kind of friend)

'much upset by a skinhead' is the wordplay.
'upset by' is an anagram indicator.
'a skinhead' becomes 's' (head letter of 'skin').
'much' is an anagram of 'chum'.
'chum'+'s'='CHUMS'

I've seen this clue in the Evening Standard.

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