With current rolling stock replacement plans by 2018 there will be 27 Class 317 and 13 class 321 displaced by the Thameslink and London Overground (West Anglia) projects, with no clear (as far as I've seen) plan for where these will go. I don't see Greater Anglia (or their successor) wanting to take on all (or any?) of the units. Where will they go? Wales? North?