I am missing one of the 12 unclued letters so can't get the phrase 10,2,4,6 . (I have everything else though)
My letters so far are T Y D W A S O N E R M
I can't parse 11a apart from the scottish drive so possibly an A from here ?
Apparently the Enigmatic Variations crossword is to be discontinued from August. I would urge everybody who does it to contact the Telegraph to reverse this decision.