This is amazing, thanks for doing it!
I'm trying to visualise the entire Crossrail network (above and below ground) and I'm finding it incredibly hard to find a complete route. I was able to download a KML of the underground aspects from the Crossrail GeoServer but I've been unable to do the same for the above-ground routes. And even if I could, they don't match up anyway (zoom in on the Crossrail OpenLayers example and the red and blue lines don't always match.
In short, do we have a complete relation on OSM for the entire Crossrail route (above and below ground)? If not, it'd be amazing if we could get that somehow.
Robin (from ViziCities.com)