Loyal support? Alas, I scam everyone (6,7)

I believe the answer is:

yeoman service

'loyal support?' is the definition.
(term for a useful person or service)

'alas i scam everyone' is the wordplay.
'alas' indicates anagramming the letters (alas can mean unfortunately or sadly).
'i'+'scam'+'everyone'='iscameveryone'
'iscameveryone' with letters rearranged gives 'YEOMAN SERVICE'.

I've seen this clue in The Guardian.

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