▁and ▁last ▁new ▁stations ▁on ▁the ▁extension , ▁Cla ph am ▁South ▁and ▁M orden , ▁include ▁a ▁para de ▁of ▁sh ops ▁and ▁were ▁designed ▁with ▁structures ▁capable ▁of ▁being ▁built ▁above ▁( like ▁many ▁of ▁the ▁earlier ▁central ▁London ▁stations ). ▁Cla ph am ▁South ▁was ▁extended ▁up wards ▁soon ▁after ▁its ▁construction ▁with ▁a ▁block ▁of ▁apart ments ; ▁M orden ▁was ▁extended ▁up wards ▁in ▁the ▁ 1 9 6 0 s ▁with ▁a ▁block ▁of ▁offices . ▁All ▁the ▁stations ▁on ▁the ▁extension , ▁except ▁M orden ▁itself , ▁are ▁Gra de ▁II ▁listed ▁buildings . ▁ ▁N aming ▁The ▁resulting ▁line ▁became ▁known ▁as ▁the ▁M orden – Ed g ware ▁line , ▁although ▁a ▁number ▁of ▁alternative ▁names ▁were ▁also ▁mo oted ▁in ▁the ▁fashion ▁of ▁the ▁contra ction ▁of ▁Baker ▁Street ▁& ▁Water lo o ▁Railway ▁to ▁" B aker lo o ", ▁such ▁as ▁" Ed g mor ", ▁" M orden ware ", ▁" Med g way " ▁and ▁" Ed g m orden ". ▁With ▁Egypt ology ▁very ▁much ▁in ▁fashion ▁after ▁the ▁discovery ▁of ▁the ▁tomb ▁of ▁T ut ank ham un ▁in ▁ 1 9 2 2 , ▁there ▁was ▁also ▁a ▁proposal ▁to ▁call ▁the ▁line ▁the ▁To ot anc am den ▁Line ▁as ▁it ▁passed ▁through ▁both ▁To oting ▁and ▁Cam den . ▁It ▁was ▁eventually ▁named ▁the ▁Northern ▁line ▁from ▁ 2 8 ▁August ▁ 1 9 3 7 , ▁reflect ing ▁the ▁planned ▁addition ▁of ▁the