8a] Loads wrong in Cornwall? If it can happen, it will. [4,3] S??? L?W.
1d] Camp guy or cadet after training. [7] R???O?T.
5d] Source of drug and hot drink? Nothing's left. [4] C?C?.
13d] Cosmologists are searching for it in what powers 21? ?A?K ENERGY. [21a is DARK ROOM.]