What about the Midland Railway centre perhaps as a base? or even somewhere in Derby or Crewe. Could the Crewe heritage centre become its permanent base ? I think with the a1 trust they were able to get the place in Darlington partly on the basis that many of the original locos were made there so the local connection. Could you even get somewhere in what remains of Crewe or Derby works ? potentially then it might be easier to get local volunteers with works experience.