Revised intention’s to get hold of English ciphers (11)

I believe the answer is:

nonentities

'ciphers' is the definition.
('nonentity' can be a synonym of 'cipher')

'revised intention's to get hold of english' is the wordplay.
'revised' indicates an anagram.
'to get hold of' is an insertion indicator.
'english' becomes 'E' (abbreviation as in OED).
'intentions' with letters rearranged gives 'nonentitis'.
'nonentitis' enclosing 'e' is 'NONENTITIES'.

(Another definition for nonentities that I've seen is " People of no importance".)

I've seen this clue in The Times.

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