cons ider able ▁benefits " ▁that ▁the ▁line ' s ▁re open ing ▁would ▁bring ▁to ▁the ▁local ▁community ▁and ▁economy , ▁whilst ▁at ▁the ▁same ▁time ▁adm itting ▁that ▁this ▁will ▁not ▁happen ▁in ▁the ▁" near ▁future ". ▁An ▁ins pection ▁carried ▁out ▁by ▁M ott ▁Mac Donald ▁in ▁ 1 9 9 7 ▁revealed ▁that ▁£ 1 0 0 , 0 0 0 ▁would ▁be ▁required ▁to ▁bring ▁Gro ve ▁T unnel ▁back ▁up ▁to ▁operating ▁standards . ▁ ▁Future ▁ ▁A ▁re open ing ▁campaign ▁has ▁been ▁run ▁by ▁the ▁We al den ▁Line ▁Camp aign ▁since ▁ 1 9 8 6 , ▁seeking ▁to ▁re open ▁the ▁railway ▁between ▁Tun bridge ▁Well s ▁Central ▁and ▁Er idge ▁and ▁between ▁U ck field ▁and ▁Lew es ▁as ▁a ▁part ▁of ▁the ▁National ▁Rail ▁network . ▁ ▁Although ▁the ▁SV R ▁re open ed ▁the ▁line ▁between ▁Tun bridge ▁Well s ▁West ▁and ▁the ▁national ▁rail ▁network ▁at ▁Er idge ▁in ▁ 2 0 1 1 ▁it ▁has ▁no ▁plans ▁for ▁the ▁re inst at ement ▁of ▁the ▁line ▁east ▁to ▁Tun bridge ▁Well s ▁Central . ▁▁▁▁ ▁Some ▁of ▁the ▁obst acles ▁facing ▁re - open ing ▁this ▁half - mile ▁section ▁would ▁include ▁the ▁following - ▁The ▁Sp a ▁Valley ▁Railway ▁Station ▁would ▁have ▁to ▁be ▁demol ished . ▁Part ▁of ▁the ▁Home base ▁DI Y ▁store ▁would ▁have ▁to ▁be ▁demol ished ▁or ▁a ▁vi ad uct ▁constructed ▁to ▁create ▁a ▁straight ▁alignment ▁for ▁the ▁track bed