(19 Apr 2016, 4:24 pm)northern156 wrote There's no fixed 'base' depots for Northern 156s or 142s. 142s often travel around and spend time at different depots (since IIRC every Northern depot signs them they can go anywhere).Slightly incorrect. The conductors at York and Leeds may not sign 156s but the drivers definately do as the Heaton 156s often venture to Neville Hill for tyre turning or York drivers will take one to Leeds if a unit needs to get to be taken to Manchester for North West services ASAP. Class 142s do have fixed depots and certain repairs / exams can only be done at the home depot. Refuelling and minor repeirs can be done at Neville Hill or Newton Heath
York and Leeds/Neville Hill crews do not sign 156s (the majority don't anyway) so they don't go there.
New Measurement Train, as mentioned above, is 'based' (don't like using that term) at Derby - ie that's where most maintenance is carried out and where the majority of turns start out from and finish at.
It's also worth noting that various units or locos will not end up at a certain depot all the time, mostly unlike buses. GC stable at Ferme Park as well as Heaton.
RE: Northern Rail