It has been raised here before, but the NER was one of the most important pre-Grouping companies having a monopoly in the North East of England including all of Northumberland and Durham and a significant proportion of England's finest county, Yorkshire.
Unlike the LMSR the LNER chose to continue using pre-Grouping NER designs so many survived long into British Railways service, and in fact the J27 proved to be the last pre-Groupiung class to work on BR.
The NER has to date been poorly represented in ready to run models, with for a long time only the J72 being available. The Q6 from Hornby was a complete surprise, and at last someone is going to add a J27.
A little anecdote about the B16 class.
In my days working in the Regional Controll Office at Newcastle upon Tyne, I worked alongside many railwaymen whose experiences went back to the 1950s and were able to speak with personal experience Part of our job was to tell signalmen which trains were to be given preference over others and usually this meant sidelining a freight train to allow an express passenger train (EP) to get a clear run. Our patch extended from Northallerton to Berwick upon Tweed, and out to Corby Gates just outside Carlisle. Using huge graph paper charts we monitored the running of all trains, and by looking at the slope of the line we drew in coloured pencil we could tell if a train was doing OK or if it was in difficulties.
In my time there every thing was diesel hauled, but many of my colleagues had their roots in days when trains were all hauled by steam. A freight train running well might be allowed to run ahead of an EP with tighter margins than were officially allowed, and 99 times out of 100 they got away with it. They said however that the B16 did not perform very well, and if York Control informed them a down freight train had a B16 on the front, they would be prepared to side line it at the first opportunity. Giving a B16 a 'run' would nearly always result in delay to following services.
The V2 was always the preferred option for a fast freight train.