Copied limit at Edinburgh to an extent (8)
I believe the answer is:
imitated
'copied' is the definition.
('imitate' can be a synonym of 'copy')
'limit at edinburgh to an extent' is the wordplay.
'to an extent' indicates a hidden word.
'IMITATED' is hidden within 'limit at edinburgh'.
(Other definitions for imitated that I've seen before include "Copied the behaviour or mannerisms of" , "Took off" , "Aped, copied" , "Followed" , "most sincerely flattered?" .)