anthony215,
I am obliged. I didn't know there was a second train. I am aware of the cement train, which will do the bases for the gantries - not that, is it?
There isn't to be a second train yet, anthony215 is wrong on that. Every announcement so far about the Windhoff HOOP train has it just being a single train, although different parts of the train can be split off to work separately, eg the piling train (normally putting in steel tubular piles) can run on ahead of the rest.
(Balfour Beatty do have what they call a 'high output' concrete delivery train operating in the NW, but that is not a HOOP in this context.)
Paul