1a "I'm anti" said poor parish priest drifting (12) ??S?P?(R?)?A???
7e Flying officer, German, organised part in a coup (5,7)?R???,???????
9a With this element no one's potentially uneconomical(7) (D?)?D????
10d Computers guard 1000 raincoats (12) (No letters - I can see K and macs in there somewhere but that is as far as my logic has taken me)
Thanks for your help Falconfan1 and for the explanantions - especially with Calcium - I would never have got that. I could almost kick myself for not seeing 'Mackintoshes' - I was halfway there!