Further to Question No: 2013/4177
"It is over 18 months since the new dot-matrix displays were fitted to Northern Line platforms at Kings Cross Underground station, and still they do not work. The old signs are so faded that they hardly work either. On what specific date will the new displays be operational?" your response being: "TfL assures me that following additional modifications, TfL expects the new dot-matrix indicators will become operational in early 2014."
What is the reason for such a lengthy delay?