RE: Pre-tax loss of £609.3million2 May 2025 09:41
The move up will be from Germany if they can agree a resolution. Impact will definitely be big in 2025. From here you get an overview of the projects :
https://db-engineering-consulting.com/en/projects/the-rhein-ruhr-express-rrx-project-in-north-rhine-westphalia-germany/
"The line between Cologne-Mülheim and Düsseldorf-Benrath will be upgraded four tracks along the entire route. From Düsseldorf-Benrath to Düsseldorf Central Station, and from Düsseldorf Airport to Duisburg, the line will even be expanded to six tracks. In Mülheim, Essen and Bochum, no additional tracks are required due to adjustments to the infrastructure. The expansion will enable freight trains that previously ran on long distance tracks to run on S-Bahn tracks in the future. In the six-track sections, separate track pairs are even being built for S-Bahn, long distance and regional transport. Numerous new switch connections will provide the necessary flexibility in operations.
In addition, a number of construction measures in the stations along the line are also planned, including building necessary additional platforms at Düsseldorf Central Station and Düsseldorf Airport. Active and passive noise protection measures, such as 23 km of noise barriers, are also planned. 37 railway overpasses have to be newly built, modernized or expanded to include additional tracks. The entire rail route equipment must also be modified to meet the new requirements. This includes the construction of two integrated subcenters of the electronic interlocking system in Düsseldorf with a control area of 43 km and over 2000 controlled elements."
And an out of date summary here https://en.wikipedia.org/wiki/Rhein_Ruhr_Express (the bits not started seem to be being worked on in 2025). That gives an example of the impact : (29th Feb to 25th April 2025)
"Trains on line RE 1 (RRX, NationalExpress) will be diverted between Dortmund Hbf and Essen Hbf with an additional stop in Herne. There will be stop cancellations in Bochum Hbf and Wattenscheid. Between Bochum Hbf and Herne, passengers can use the U 35 underground line. In addition, there will be stop cancellations between Dortmund Hbf and Hamm (Westf) Hbf: Here, only the stop in Kamen will be served on the way. Passengers can use the RE 3 line for the other stops during the day; in the evening hours, replacement buses will run between Hamm (Westf) Hbf and Dortmund Hbf.
The trains of line RE 6 (RRX, NationalExpress) are cancelled between Essen Hbf and Dortmund Hbf: The trains from Düsseldorf end in Essen Hbf (without stopping at Mülheim (Ruhr) Hbf); the trains from Minden end in Dortmund Hbf.
On line RE 11 (RRX, NationalExpress), the stops between Duisburg Hbf and Dortmund Hbf will be cancelled. The trains from Düsseldorf end in Oberhausen Hbf; the trains from Kassel-Wilhelmshöhe end in Dortmund Hbf."