Last two-
14d racecourse appliance on the radio (9) - ***C*S*E* - it could be Lancaster, Leicester, Tadcaster or Towcester - which?
15a bird going through doot to landing (7) *R***A* - ???
Towcester as it is pronounced Toaster.
(On the radio means 'as heard'; toaster is an appliance.)
I'm not aware of racecourses in Lancaster, Leicester or Tadcaster- only Towcester- but I don't pay much attention to racing.