Not much of the current Granite Way is paralleled by the old Launceston line, which ran alongside the SR line from Tavistock to Lydford, a stretch which only has a short [and much interrupted] length of footpath/cyclepath from Tavistock North station to Wilminstone viaduct. I believe there were serious issues,not yet resolved, with landowners which precluded the extension of the facility beyond the current point. But should the government decide that the Okehampton-Tavistock section is needed as part of the National network, then presumably CPO action would take place as was the case with the Borders Railway, which also had a footpath/cyclepath within it-not sure if the path will be reopened bearing in mind the Borders Railway is only single track. It would be a shame to lose the Granite Way, i've walked it many times, but needs must and so be it should the powers that be decide that rail rather than cycle is the preferred method.