That is true. However, doing some calculations, there are 162 150 coaches currently with Northern, and if those are to be replaced (which is probably a realistic prospect by the time other Sprinters become available) then there will be a total of 148 coaches (100 158 coaches, 48 156 coaches) that could transfer to Northern. In that case, the neo-155 idea could kick in to fill the gap (unless Scotland decides to put more wires up and release some more of their Sprinters, which would probably cover the gap more effectively).