This agreement, including the '''Sheffield and Midland Railway Companies' Committee''', was formalised in the
Manchester, Sheffield, and Lincolnshire Railway (Additional Powers) Act 1872 (
35 & 36 Vict. c. clxxviii) of 6 August 1872 In 1867 the line had opened into Manchester Store Street, by then renamed London Road (now
Piccadilly), which the MS&LR shared with the LNWR. However, the committee, seeking a more direct route, opened a line through
Bredbury and
Reddish in 1875. Increasing friction with LNWR led to the
Cheshire Lines Committee being formed and when
Manchester Central opened in 1880 trains were diverted at
Romiley through
Stockport Teviot Dale (as it was originally spelt). This entailed another new line, the
Manchester South District Railway, from
Heaton Mersey to
Chorlton-cum-Hardy. Although incorporated in 1873, there was a lack of interest on the part of the MS&LR and the GNR (the Midland's partners in the CLC). It was therefore taken under the wing of the Sheffield and Midland Committee, with the Midland taking overall control in 1877. The line finally opened in 1880. However, by the end of the century congestion around Stockport had increased, and with speed limits, gradients and curves, the Midland looked for yet another route. The
New Mills and Heaton Mersey Railway was authorised by the
Midland Railway Act 1897 (
60 & 61 Vict. c. clxxxiii), running from New Mills South Junction, between
New Mills and
Buxworth through
Disley Tunnel. ==Modern times==