A determined group of people (3)

I believe the answer is:

set

I believe this clue is a double definition.

'a determined' is the first definition.
(I know that determined can be written as set)

'group of people' is the second definition.
(eg a social set)

(Other definitions for set that I've seen before include "Mount (precious stone)" , "carriage" , "Harden; fixed; group" , "box?" , "Prescribed" .)

I've seen this clue in the Evening Standard.

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