Almost time to accompany key group working late (5,5)

I believe the answer is:

night shift

'group working late' is the definition.
(group working at night)

'almost time to accompany key' is the wordplay.
'almost' becomes 'nigh' (nigh can mean almost or nearly).
'time' becomes 't' (abbreviation).
'to accompany' means one lot of letters go next to another.
'key' becomes 'shift' (key on a computer keyboard).
'nigh'+'t'+'shift'='NIGHT-SHIFT'

I've seen this clue in The Times.

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