Times No.973
I have correct answers to the 3 following across clues but cannot understand half the clue (first half for 9, second half for 20 & 24):
9 You are told Oxford course is held only in part of Oxford (5). Answer: UPPER
20 Finish by executing guy (3,2). Answer: ENDUP
24 Better following horse (6) Answer: FAIRER
(any connection with 'farrier'?)