The current series (6)

I believe the answer is:

stream

This clue is a double definition.

'the current' is the first definition.
('stream' can be a synonym of 'current')

'series' is the second definition.
(stream is a kind of series)

(Other definitions for stream that I've seen before include "schoolchildren grouped together" , "flower" , "Running liquid" , "class division" , "divide pupils into ability groups" .)

I've seen this clue in The Telegraph and the Evening Standard.

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