Goodness shown by Conservative? Suspect codswallop (6)
I believe the answer is:
crumbs
'goodness' is the definition.
(interjection)
'shown by conservative? suspect codswallop' is the wordplay.
'shown by' means one lot of letters go next to another.
'conservative?' becomes 'C' (UK political abbreviation).
'suspect' becomes 'rum' (I've seen this in other clues).
'codswallop' becomes 'bs' (I can't explain this - if you can you should believe this answer much more).
'c'+'rum' is 'crum'.
'crum'+'bs'='CRUMBS'
Can you help me to learn more?
(Other definitions for crumbs that I've seen before include "Tiny bits of bread - golly!" , "Gosh!" , "Blimey!" , "not much of a bloomer!" , "Small bread particles" .)