
Railways in the Stockport area before 1978 | Source: Wikipedia | Author: Rcsprinter123 | Licensed under the Creative Commons Attribution 3.0 Unported license (view license) | Overlay by Reopen

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Since 2004, there have been various plans to create a short Metrolink extension linking East Didsbury to Stockport (the distance is about four miles), but these have failed through lack of funding.The most recent of these proposals, “to reinstate the East Didsbury to Stockport line” was submitted to the Department for Transport Restoring Your Railway Fund, possibly by Stockport Council and Transport for Greater Manchester (see below). An award from this fund enables a scheme promoter to make progress towards developing a business case. The proposal was not among those selected to receive funding.
A short section [of the alignment] in Heaton Mersey has been built on, but could clearly be bypassed by on-street running (and it’s not even clear that is necessary). The rest of the line does exist. In particular, since the line ran entirely to the north of both the Mersey and the M60, bridges are not inherent to the proposal. Although the new Interchange in Stockport is indeed south of these, again on-street running could be used to reach it without new bridges, since multiple existing, wide road bridges/underpasses cross these. In fact a new bridge over the Mersey has just been built to service the Interchange.
Excerpt from an email correcting errors in an earlier version of this page.
Stockport Council and Transport for Greater Manchester are set to request between £500m and £1bn from the Government to deliver an extension of the Metrolink line from East Didsbury to the town centre. The Government has previously signalled its support in principle for the extension of the network, when the Greater Manchester Combined Authority released its ambitions to expand the Metrolink, potentially using tram-trains, alongside the rewrite of the Greater Manchester Spatial Framework last January. TfGM and the council have already paved the way for trams to integrate with other transport networks in Stockport; the £120m redevelopment of Stockport Interchange due to start on site this year factors in a Metrolink route and stop, and is backed by £40m of Government Growth Fund money. Stockport Council and TfGM will now work up a business case for the Metrolink extension, which is set to cost between £500m and £1bn, and will also request Government grant the necessary transport planning powers at the same time as the funding. If funding is granted, a start on site could begin by 2025.
Source: Stockport prepares £1bn Metrolink bid, by Jessica Middleton-Pugh, on Place North West website (January 2020).
Extending beyond Stockport to Ashton and Manchester Victoria
Three Manchester MPs, Andrew Gwynne (Denton), Angela Rayner (Ashton-under-Lyne) and Navendu Mishra (Stockport), have submitted a plan to the Department for Transport Restoring Your Railway Fund in which they propose extending the Rochdale – East Didsbury line beyond Stockport through Reddish South and Denton over the current National Rail line, joining the Ashton – Eccles Metrolink line to form an orbital route.

Proposed Manchester Metrolink orbital route | Enlarge
Original map created by Maximilian Dörrbecker (Chumwa) based on OpenStreetMap data and licensed under the Creative Commons Attribution-Share Alike 2.0 Generic license | View license | Potential Metrolink extension from East Didsbury to Stockport and Ashton-under-Lyne added by Reopen
Read more about the proposed Ashton – Stockport reopeningOverview of Greater Manchester reopening schemes

Further reading
Beeching Reversal – East Didsbury – Stockport, on The Anonymous Widower website
Four in race for £120m Stockport Interchange, by Charlie Schouten, on Place North West website (October 2019)
Manchester South District Railway – Wikipedia
Mayor of Greater Manchester calls on Government to help fast track Metrolink to Stockport, on Stockport Council website (January 2020)
Metrolink Extension discussion forum on Skyscraper City
Metrolink Extensions: Where Next? by Stuart Vallentine, on East of the M60 website
Old maps of Stockport area on Old-Maps.co.uk website
Revealed: Stockport train station’s multi-million pound transformation plans, by Todd Fitzgerald, on Manchester Evening News website (2016)
Stockport prepares £1bn Metrolink bid, by Jessica Middleton-Pugh, on Place North West website (January 2020)