▁August ▁ 1 9 6 6 ▁when ▁the ▁£ 6 m ▁M 1 ▁section ▁reached ▁N uth all ; ▁construction ▁had ▁begun ▁in ▁April ▁ 1 9 6 4 . ▁The ▁former ▁route ▁follows ▁what ▁is ▁now ▁the ▁B 6 0 0 , ▁the ▁former ▁A 6 1 3 ▁to ▁Alf re ton . ▁Short ly ▁afterwards , ▁the ▁route ▁then ▁meets ▁the ▁N uth all ▁Inter change ▁( j unction ▁ 2 6 ) ▁of ▁the ▁M 1 ▁motor way ▁at ▁a ▁large ▁round about . ▁On ▁ 2 4 ▁May ▁ 1 9 6 7 , ▁Barbara ▁Castle ▁opened ▁the ▁section ▁of ▁the ▁M 1 ▁from ▁here ▁to ▁j unction ▁ 2 7 ▁at ▁An nes ley ▁Wood house , ▁built ▁by ▁George ▁W im pe y ; ▁it ▁was ▁started ▁in ▁December ▁ 1 9 6 4 ▁and ▁was ▁to ▁be ▁finished ▁by ▁January ▁ 1 9 6 7 . ▁High ▁Speed ▁ 2 ▁will ▁cross ▁the ▁A 6 1 0 ▁at ▁the ▁j unction , ▁on ▁the ▁eastern ▁side ▁of ▁the ▁M 1 . ▁ ▁After ▁the ▁M 1 , ▁the ▁route ▁enters ▁a ▁four ▁mile ▁long ▁stretch ▁of ▁dual ▁carriage way , ▁passing ▁N uth all , ▁Kim ber ley , ▁G ilt bro ok ▁and ▁East wood ▁to ▁the ▁north , ▁and ▁Aw sw orth ▁to ▁the ▁south . ▁The ▁£ 3 . 0 5 m ▁East wood - K im ber ley ▁By - pass ▁opened ▁on ▁ 6 ▁July ▁ 1 9 7 4 ,