Swimming group organise a trip (6,3)

I believe the answer is:

school run

'a trip' is the definition.
(trip to take children to school)

'swimming group organise' is the wordplay.
'swimming group' becomes 'school' (group of fish).
'organise' becomes 'run' (both can mean to lead or be in charge of).
'school'+'run'='SCHOOL RUN'

I've seen this clue in The Independent.

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