Up to and subsequently! (5)

I believe the answer is:

after

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'subsequently' is the definition.
(I've seen this in another clue)

I don't understand the rest of the clue.

(Other definitions for after that I've seen before include "Pursuing" , "Looking for" , "Subsequently" , "Subsequent to" , "back along > deck" .)

I've seen this clue in the Evening Standard.

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