James Derrick
The latest HMG "The Growth Plan 2022" has "A1 dualling – Morpeth to Ellingham" at #70/86, and that's with the Sec. State for Transport being a local MP for Berwick.
https://www.gov.uk/government/publications/the-growth-plan-2022-documents/the-growth-plan-2022-html

The Northumberland Line is the second highest Rail project, and I've already surveyed and mapped several work sites so it's a certainty that passenger trains will run before the A1 is dualled.