Spill the beans about Tory fringe up to no good (8)

I believe the answer is:

scheming

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'up to no good' is the definition.
I can't tell whether this definition defines the answer.

'spill the beans about tory fringe' is the wordplay.
'spill the beans' becomes 'sing' (both can mean to reveal secrets).
'about' means one lot of letters goes inside another.
'tory' becomes 'c'.
'fringe' becomes 'hem' (I've seen this in another clue).
'c'+'hem'='chem'
'sing' placed around 'chem' is 'SCHEMING'.

Can you help me to learn more?

(Other definitions for scheming that I've seen before include "Duplicitous" , "Devious" , "cunning" , "far from 10 [WIDE EYED]" , "Planning secretly" .)

I've seen this clue in The Independent.

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