▁Deput e , ▁a ▁Crown ▁pro sec utor , ▁from ▁ 1 9 6 4 ▁to ▁ 1 9 7 1 , ▁being ▁appointed ▁Queen ' s ▁Coun sel ▁( Q C ) ▁in ▁ 1 9 6 7 . ▁In ▁ 1 9 7 2 ▁he ▁became ▁chairman ▁on ▁the ▁Medical ▁App e al ▁Trib un als ▁for ▁Scotland ▁and ▁became ▁chairman ▁of ▁a ▁working ▁party ▁on ▁for ens ic ▁path ology ▁services ▁in ▁Scotland . ▁As ▁an ▁advoc ate , ▁he ▁def ended ▁Paul ▁McC art ney ▁against ▁dru gs ▁charges ▁in ▁March ▁ 1 9 7 3 ▁when ▁a ▁trial ▁took ▁place ▁in ▁Camp b ellt own . ▁He ▁caused ▁up ro ar ▁in ▁court ▁when ▁he ▁asked ▁if ▁McC art ney ▁could ▁have ▁" time ▁to ▁pay " ▁a ▁£ 3 0 ▁fine . ▁He ▁became ▁Sher iff ▁Princi pal ▁of ▁Dum f ries ▁and ▁Gall ow ay ▁in ▁December ▁ 1 9 7 3 . ▁ ▁Mc Cl us key ▁was ▁appointed ▁Sol ic itor ▁General ▁for ▁Scotland ▁in ▁March ▁ 1 9 7 4 ▁in ▁the ▁new ▁Labour ▁government ▁of ▁Harold ▁Wilson . ▁On ▁ 2 9 ▁September ▁ 1 9 7 6 ▁he ▁was ▁created ▁a ▁life ▁peer ▁as ▁Baron ▁Mc Cl us key , ▁of ▁Church hill ▁in ▁the ▁District ▁of ▁the ▁City ▁of ▁Edinburgh . ▁This ▁was ▁so ▁that ▁he ▁could ▁help ▁ste er ▁the ▁De volution ▁bill ▁through ▁the ▁House ▁of ▁L ords . ▁He ▁remained ▁as ▁Sol ic itor ▁General ▁until ▁the