Season 12 of Adventures on Rails will air from April 5th to June 14th, 2013.
- Diesel Does it Again
- Project 11001
- David's Restoration
Donald and Douglas may also appear
- David*- a J11 rescued from scrap used for goods on Edward's Branch and the Main Line.
- already has been introduced in another production
The season will have ten episodes taking place from 1960-1965. It will show David's restoration, the plan to build the Bulleid Diesel, Mavis and BoCo's arrivals, and opening of the Tidmouth-Arlesburgh Branch Line. It will also see Diesel's return to Sodor in 1961. Percy at the Coal Mines Marathon is now confirmed to be a stand alone marathon that takes place during this season.