English retreat to find garden (4)
I believe the answer is:
eden
'garden' is the definition.
(I've seen this in other clues)
'english retreat' is the wordplay.
'english' becomes 'e' (abbreviation).
'retreat' becomes 'den' (both can mean a lair or hideout).
'e'+'den'='EDEN'
'to find' acts as a link.
(Other definitions for eden that I've seen before include "Unspoiled paradise" , "The best of all gardens" , "Early garden - Cornish project" , "Someone once seen in Number Ten's" , "The most enchanting garden of all" .)