The upper class punter? (6)
I believe the answer is:
better
This clue might be a double definition.
'the upper' is the first definition.
(thesaurus)
'class punter?' is the second definition.
'better' can be an answer for 'punter?' (someone having a bet or punt). I'm unsure of the 'class' bit.
Can you help me to learn more?
(Other definitions for better that I've seen before include "One making wager; more advantageous" , "no longer sick" , "Recovered; gambler" , "Superior of two alternatives" , "More desirable; gambler" .)