Artist supporting John Bishop on TV show -- Australian acts are made here (8)
I believe the answer is:
canberra
'tv show australian acts are made here' is the definition.
The answer is a location as well as being a singular noun. This is suggested by the definition.
'artist supporting john bishop' is the wordplay.
'artist' becomes 'RA' (Royal Academician, member of Royal Academy of Arts).
'supporting' is a charade indicator (letters next to each other) (in a down clue, some letters go below others).
'john' becomes 'can' (both can informally mean toilet).
'bishop' becomes 'ber' (I can't justify this - if you can you should believe this answer much more).
'can'+'ber'='canber'
'ra' put after 'canber' is 'CANBERRA'.
'on' acts as a link.
Can you help me to learn more?
(Other definitions for canberra that I've seen before include "Nab racer, oddly, in Australia" , "Australian capital - old ship" , "Capital of Australia" , "Ban carer from this city" , "Capital - bomber - liner" .)