Record detailed a certain racecourse (5)
I believe the answer is:
epsom
'racecourse' is the definition.
(Epsom is an English racecourse)
'record detailed a certain' is the wordplay.
'record' becomes 'EP' (abbreviation for extended play record).
'detailed' means to remove the last letter (the word must be end-less or 'de-tailed').
'a certain' becomes 'some' (eg some person means a certain person).
'some' with its final letter taken off is 'som'.
'ep'+'som'='EPSOM'
(Other definitions for epsom that I've seen before include "Classic racecourse" , "Poems about English Derby venue" , "Home to the Derby and the Oaks" , "Racecourse near London" , "Surrey racing town" .)