The Spanish court accepting English make a choice (5)
I believe the answer is:
elect
'make a choice' is the definition.
(electing is a kind of making a choice)
'the spanish court accepting english' is the wordplay.
'the spanish' becomes 'el'.
'court' becomes 'ct'.
'accepting' means one lot of letters goes inside another.
'english' becomes 'e' (abbreviation).
'el'+'ct'='elct'
'elct' enclosing 'e' is 'ELECT'.
(Other definitions for elect that I've seen before include "Make" , "Choose by ballot" , "Put in power by voting" , "Select; chosen" , "special people" .)