Appears, needing drink after shock (5,2)

I believe the answer is:

rocks up

'appears' is the definition.
(rock up can mean to appear or arrive)

'drink after shock' is the wordplay.
'drink' becomes 'sup' (to sup is to drink).
'after' says to put letters next to each other.
'shock' becomes 'rock' (rock can mean to shock or stun).
'sup' put after 'rock' is 'ROCKS UP'.

'needing' is the link.

I've seen this clue in The Independent.

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