Holiday 57 Stinker

Still feeling rotten with this flu. Flipping through, I have discovered that I have missed a couple of clues in the Stinker. Cannot concentrate on them, so am begging the answers, please!

166A - Ill-treat - M?U?

Maul makes some sort of sense, but is pretty nebulous - it seems to be on a par with bash, starve, dismember, ignite, shoot, spit on - all forms of ill-treatment, but hardly definitive.

183A - Ship-shaped condiment holder - N?F

I know I have come across this one fairly recently, but cannot locate any reference to it anywhere.

200D - Company split-up - I have DEMERGER. would be grateful of confirmation of this or another word.

Thanks for any help.