Ragspanner,
If Channel do not have procedures for windmill start, then I am sure that any Atlantic TRE would happily release details of the approved procedure. Atlantic have worked with Channel on matters such as this before, with Channel being extremely cooperative regarding three engine ferry procedures and reduced temperature take off procedures. As you say, the procedure is no big deal and is far less complex than the three engine take off for which Channel hold approval.
Captain Cargo,
I am sorry that you don't approve of the box bolted to the floor in Seattle, but the unfortunate fact is that it is all that is available. More to the point is the fact that Atlantic still use the facility, despite its limitations, for initial and continuation training. How do other operators train for system failures on a regular basis, as there is a limit to what you can do on the aircraft.
Electraflying,
The minimum field length is derived from the three engine take off flight manual supplement. This offers a minimum required field length with an abort up to Vr assuming acceleration on three engines, and the 14L/32R at Cologne would certainly fall within the required parameters.