(07 Mar 2020, 8:29 pm)RobinHood wrote Depots at any one time have 2 vehicles off for annual MOT prep and presentation. They are normally off for a full week, so that list will include up to 14 vehicles that aren't long term VOR.
True, long term VOR was probably poor phrasing but MOT prep vehicles further add to the point that vehicle availability generally isn't too bad. I'm aware depots generally do a fair amount of vehicle inspections per week too as part of preventative maintenance, which further aids reliability.
As was pointed out in the GNE thread the other day, preventative maintenance is being pushed even further now so in the near future we should see even bigger improvements in vehicle availability.