A welcome addition to local proposals for rail reopenings is the Welland Valley Railway Partnership which is proposing a short railway link near Corby to allow service to run from Kettering on the Midland Mainline, and Corby, through to Stamford and Peterborough with an idea they could be extended to reach March and Wisbech.
You can read more about this scheme and how to support it here:
https://wvr.org.uk/
https://wvr.org.uk/services