No, I've done Mk2 TSO 977869 in both Railtrack and Network Rail variations, I've done a Mk1 BG in Network Rail yellow, and me and Greeni are working on the Network Rail Structure Gauging Train (which includes a departmental wagon).....I'm also doing Mk1 brake testing coach 975397 in Serco livery.
I'll be updating my Railtrack class 121 reskin ("Pandora") with a photo texture version in the near future.
Also, Nexusdj has done a fantastic Serco Mk1 track recording coach, which I eagerly await the release of
I started working on the English end of the Channel Tunnel at one point, the plan was for the route to stretch from the Tunnel to Ashford International, with portals at each end. It's prototypical so far, made using google earth and planningportal maps, although I can't remember if I've used the real heights. I don't know whether I'll bother modelling the tunnel itself though as it would be pretty boring to drive, however Sam if your route is going to be prototypical (or at least with the tunnel entrance facing the right way) then I could easily be convinced to create the tunnel and set it up so the two routes can be merged. It would of course include the huge crossover chambers for added interest
There's a long way to go before it's even close to being a route though, and I can't see myself wanting to work on it again until my Eurostar is close to completion, although Eldavo's 92 might motivate me a bit as the route includes Dollands Moor
Here's how far I got anyway, this is the Folkestone / Cheriton terminal viewed in Trainzmap..
And a view of the actual route... this was an early shot so I've done a bit more work on it since then (namely hills and texturing). The grey area on the left is the where the reception centre is, with the road on the right being the M20. The bridges and ramps at the terminal were an absolute pain to build! (using DLS assets)