Top people having some bread with evening meal, but no starter (5,5)
I believe the answer is:
upper crust
'top people' is the definition.
(thesaurus)
'some bread with evening meal but no starter' is the wordplay.
'some bread' becomes 'crust' (I've seen this before).
'with' is a charade indicator (letters next to each other).
'evening meal' becomes 'supper' (I've seen this before).
'but no starter' means to remove the first letter.
'supper' with its initial letter removed is 'upper'.
'crust' after 'upper' is 'UPPER-CRUST'.
'having' is the link.
(Other definitions for upper crust that I've seen before include "better sort" , "Posh" , "Aristocratic" , "Sal" , "Part of the loaf" .)