Jockey free to meet queen … (5)
I believe the answer is:
rider
'jockey' is the definition.
(horserider)
'free to meet queen' is the wordplay.
'free' becomes 'rid' (to be free of something is to be rid of it).
'to meet' is a charade indicator (letters next to each other).
'queen' becomes 'ER' (abbreviation for Elizabeth Regina).
'rid'+'er'='RIDER'
(Other definitions for rider that I've seen before include "Appandix, codicil" , "Horseman or addendum" , "One in the saddle" , "extra weight needed for balance?" , "in the dressing room before the show?" .)