 Twentieth century construction included a branch from Leek to <unk> Lowe via <unk> from where the 2 ft 6 in ( 762 mm ) narrow gauge Leek and Manifold Valley Light Railway ( L & MV ) was constructed through the <unk> and Manifold river valleys to Hulme End near Hartington . Although the L & MV was nominally independent the NSR both worked and operated the line . 
