I was at DLR Prince Regent yesterday 19/1 and the white liveried very long road railer was adjacent to the station on the crossrail site.Atlas B5.2 crane was mounted on it.
Did not appear to be RIV number evident, only the TSO telephone number! 0-6-0 Diesel shunter (Jung) in blue was also here as well as 3 Quattro road railers reported on OTPNET today. Can any body help with ID of the white monster machine. I took some photos but will have to wait for roll to be developed!
This is the machine you saw: http://www.ontrackplant.com/road-railers/crossrail/3350
I have submitted a photo to go with the page too, but its yet to be approved. No RIV number for the machine. It's twin which was working with it at Connaught through 2015 was sighted at Westbourne Park in December and is now somewhere under Bond Street.
Edit, photos been approved:
Machine currently at Connaught, and not as clean and white now: http://www.ontrackplant.com/user/photo?id=15735
The one sighted at Westbourne Park, though re-mixer has now been removed: http://www.ontrackplant.com/photo/crossrail-tso495-metalliance-vms30-1