Network Rail has revealed that the biggest ever upgrade to the region's rail network will be up to four years late.
It means a promise to end overcrowding and speed up journey times has again been delayed.
The project cost has risen from around £800 million to £2.8 billion, with Network Rail saying the project is more complex than it first thought.
It means new trains, including the new Hitachi bullet trains, may be left sitting in the sidings and electrifying the line from Paddington to Bristol will be put back to 2019. Watchdogs say it's a total shambles.