What to do if your bike is stolen

Sorry to hear this, Mark--really hope it's recovered and it's just a clerical error or something. Should it remain missing, it would be the first case of this kind that I remember hearing about.

You should post it in the 'Stolen Bikes' thread, too--this one here is mainly intended for the London-specific advice in the first post and amendments to and discussion of it.

Have you considered the possibility that it may have been taken off the train at some intermediate stop, e.g. Ebbsfleet, Ashford, or Calais-Fréthun? (I don't know what stops the Paris train normally does, as I usually take the one to Brussels.) Or that it wasn't loaded in the first place? (Back to the possibility of despatch error.)

Good luck with it in any case.