Crossword Genius

The sort of guards to have hrs pottering about? (5,7)

Ross

I believe the answer is:

night porters

'the sort of guards' is the definition.

'hrs pottering about?' is the wordplay.
'about?' indicates anagramming the letters (I've seen 'about' mean this).
'hrs'+'pottering'='hrspottering'
'hrspottering' with letters rearranged gives 'NIGHT-PORTERS'.

'to have' acts as a link.

I've seen this clue in The Telegraph.
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