The speaker arranged time before last in series is listed (8)

I believe the answer is:

itemized

'is listed' is the definition.
(itemized in a list)

'the speaker arranged time before last in series' is the wordplay.
'the speaker' becomes 'I' ('I' refers to the person saying it).
'arranged' indicates anagramming the letters.
'before' is a charade indicator (letters next to each other).
'last in series' becomes 'zed' (last letter of the alphabet).
'time' with letters rearranged gives 'temi'.
'i'+'temi'+'zed'='ITEMIZED'

I've seen this clue in The Guardian.

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