8d Bitter spinster, showing low cunning in part (4,6) R?S? / D???L?
16a He, thee and me could make 18,3 or something similar (7) I?T?G??
(The i came from 9d Dick travelled north to consume everything in a cocktail...for which I have roderick alleyn... but can't fully parse it ....is it a cocktail?)
Answers to 18,3 if relevant are red tape and ethic