LNER will see a large uplift in capacity and services. A planned increase from 5 trains per hour to 6.5 trains per hour to/from Kings Cross and new services to Lincoln/Harrogate/Middlesbrough/Newcastle, assuming all the infrastructure improvements are completed.
30 x 9 car electric for 26 diagrams, direct replacement for the current 26 Mk4 diagrams, with over 100 extra seats per set.
13 x 9 car bi-mode for 10 diagrams, to replace 10 out of 14 HST diagrams, again over 100 extra seats per set.
12 x 5 car electric sets for 10 diagrams, to be used primarily for the extra services planned (most likely the new Kings Cross - Newcastle stopper)
10 x 5 car bi-mode for 8 diagrams, to be used primarily for the new Harrogate/Lincoln services.
Very few services that are currently 9 cars will be diagrammed for a 5 car. The 5 car units are primarily for the new services.
Excluding the small number of MK4 sets LNER are planning on keeping, there will be an increase of 54 carriages diagrammed each weekday on LNER. And each set will be used more intensively as a result of the reduced journey times.