I’d turned up in middle of nominated country (5)
I believe the answer is:
india
'country' is the definition.
(India is an example)
'i'd turned up in middle of nominated' is the wordplay.
'turned up' shows that the letters should be reversed in order.
'in' means one lot of letters goes inside another.
'middle of' indicates the central letters.
The middle of 'nominated' is 'ina'.
'id' in reverse letter order is 'di'.
'di' put into 'ina' is 'INDIA'.
(Other definitions for india that I've seen before include "Nation, I (radio comms.)" , "Country in South Asia" , "Kiss; quarter of a bushel" , "One preceding Juliet" , "Subcontinent of Asia south of Himalayas" .)