Strand in Padstow is perfect (4)
I believe the answer is:
wisp
'strand' is the definition.
(I've seen this before)
'in padstow is perfect' is the wordplay.
'in' indicates the answer is hidden within the clue.
'WISP' can be found hidden inside 'padstow is perfect'.
(Other definitions for wisp that I've seen before include "Thin girl" , "Small strand of something" , "Gauzy strand" , "Small thin line of cloud or smoke" , "Something insubstantial" .)