Old hutch hidden in tall grass is unlocked again (8)

I believe the answer is:

reopened

'unlocked again' is the definition.
(opened up again)

'old hutch hidden in tall grass' is the wordplay.
'old' becomes 'o' (abbreviation).
'hutch' becomes 'pen' (both can mean an enclosure).
'hidden in' indicates putting letters inside.
'tall grass' becomes 'reed' (tall grass plant).
'o'+'pen'='open'
'open' put into 'reed' is 'REOPENED'.

'is' acts as a link.

(Another definition for reopened that I've seen is " started again".)

I've seen this clue in The Times.

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