Writer seen in superior wellies (6)
I believe the answer is:
orwell
'writer' is the definition.
(writer George Orwell)
'in superior wellies' is the wordplay.
'in' indicates the answer is hidden within the clue.
'ORWELL' is hidden in the letters of 'superior wellies'.
'seen' acts as a link.
(Other definitions for orwell that I've seen before include "River" , "George -, nineteen eighty four author" , "Socialist author" , "Author of 1984 etc" , "George ...... wrote 'Animal Farm' and '1984'" .)