New development with regards to security measures / platform isolation in Cologne.
http://www.ksta.de/html/artikel/1302525801048.shtml
Quick translation:
A new control zone will have to be constructed in Cologne Hbf for the planned ICE connection with London. Deutsche Bahn is intending to use platform 1 for this and wants to accomodate the respective trains there despite potential restrictions (for other rail transport).
From 2013, DB wants to run three daily services between Frankfurt and London, all of which will stop in Cologne. The journey from the Rhine to the Thames should last just under four hours. But comprehensive restructuring is required at Cologne Hbf for this to be possible. Due to the strict security measures involving in travelling through the Channel Tunnel, passengers and luggage must be checked and scanned as it would be at an airport. This means that respective control and waiting zones must be established.
"Platform 1 is the only option," says DB spokesman Udo Kampschulte. "We are not yet sure where, how and what exactly will be constructed," he continued. The decision will be made in the next few months. One thing is certain: it must be ensured that people cannot board the train without being checked. For passengers, this means that they will have to be at the station earlier than they would be for other rail journeys.
The Green party are thoroughly critical of the plans for the new ICE connection. Green party transport expert Manfred Waddey, for example, refers to the fact that the ICE to and from Frankfurt will have to cross all other platforms in order to reach platform 1 and this "will significantly hinder other rail traffic at the station". Kampfschulte does not agree. "As only three journeys are planned per day, operations in the station will not be affected to a large extent."
Waddey also criticises the fact that passengers who only want to travel to Brussels will not be exempt from the security checks and he fears that rail transport in the region will become worse due to the fact that the London ICE shall also replace some connections. This means, for example, that cities such as Siegburg and Liege which will not be served by the London ICE, will lose some services. Waddeys suggestion is that the ICE only travels as far as Brussels, all passengers then get off the train, go through the security measures and get on another ICE bound for London. DB spokesman Kampschulte sees no positives in this idea.
Frankfurt, Cologne, Lille and Brussels are intended to be served by the new ICE service. Whether the train stops at Aachen is still being debated. "The question is whether that's economical," said Kampschulte. That will depend on the forecasted passenger levels, and also on whether the city of Aachen shares some of the costs. Negotiations are ongoing. It is not expected that the city of Cologne will share any of the reconstruction/operating costs.