2 down
Once
more
broadcast
concerning
series
(5)
Once more broadcast concerning series (5)
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hints
The definition is at the beginning of the clue.
How the clue works
Right, so Once more broadcast is your definition there — airing something again, a rerun. For the wordplay, stick RE on the front, meaning "concerning", then add RUN, a "series", and the two together give you the answer.