▁power ▁between ▁Clark ▁and ▁his ▁brother ▁Michael ▁along ▁with ▁some ▁other ▁board ▁members , ▁but ▁a ▁vote ▁of ▁no ▁confidence ▁failed . ▁Clark ▁took ▁over ▁the ▁chair mans hip ▁of ▁AT & E ▁and ▁British ▁Eric sson , ▁and ▁in ▁ 1 9 6 4 ▁called ▁in ▁McK in sey ' s , ▁the ▁management ▁consult ancy ▁company , ▁to ▁advise ▁on ▁re organ ization . ▁P les sey ▁was ▁then ▁re organ ized ▁into ▁product ▁groups ▁and ▁in ▁ 1 9 6 7 ▁Clark ▁was ▁appointed ▁deput y ▁chairman . ▁ ▁In ▁ 1 9 6 7 ▁the ▁General ▁Electric ▁Company ▁( GE C ) ▁merged ▁with ▁Associ ated ▁Elect rical ▁Indust ries ▁( AE I ). ▁There ▁was ▁concern ▁that ▁P les sey ▁might ▁be ▁the ▁next ▁target ▁for ▁G EC ▁and ▁an ▁approach ▁was ▁made ▁to ▁English ▁Electric ' s ▁chairman ▁Lord ▁Nelson . ▁However , ▁Nelson ▁agreed ▁a ▁mer ger ▁with ▁G EC ▁and ▁this ▁was ▁back ed ▁by ▁government ' s ▁Indust rial ▁Re organisation ▁Corporation . ▁ ▁In ▁ 1 9 7 1 ▁Clark ▁succeeded ▁Field ▁Marsh al ▁Lord ▁Hard ing ▁as ▁chairman ▁of ▁P les sey . ▁In ▁ 1 9 7 6 ▁he ▁became ▁chief ▁executive ▁as ▁well ▁as ▁chairman ▁keeping ▁both ▁roles ▁until ▁ 1 9 8 9 . ▁During ▁the ▁ 1 9 7 0 s ▁P les sey ▁supplied ▁half ▁of ▁the ▁UK ' s ▁tele phone ▁equipment . ▁At ▁P les sey ' s ▁Cas well ▁Research ▁Centre ▁in ▁North am