The Elizabeth Line was supposed to be running through Central London by December 2018 but it isn’t. Many people are blaming the complex signalling systems. Are they right?
Did a small problem in Mid Wales cause a more than one-year delay in Central London?
What went wrong with Crossrail’s Signals?
An introduction to railway signalling and how it has developed in the UK.
What it means for finalising the Elizabeth Line and getting the trains to run.