I put in a Freedom of Information request to LNER on What Do They Know on Thursday asking for the latest diagrams as the ones shown on the site were from the middle of May. Not only have they provided the current diagrams but have also uploaded separate PDF's showing the additional diagrams added weekly from 18th November.
In summary:
- There are currently 20 diagrams in service made up of:
- Eight 9-Car Bimode Diagrams
- Eight 5-Car Electric Diagrams (made up of four pairs)
- Four 5-Car Bimode Diagrams
The next diagram changes commence on 18th November and will occur weekly from then. Only the weekday diagrams were provided owing to the engineering work taking place at weekends and therefore diagrams are only finalised shortly beforehand.
- 18th November - Diagrams 21 and 22 are introduced which sees two 9-Car Electric diagrams added.
- 25th November - Diagrams 23 and 24 are introduced which sees two 9-Car Electric diagrams added.
- 2nd December - Diagrams 25, 26 and 27 are introduced which sees two 9-Car Electric diagrams added and one 9-car Bimode diagram added.
- 9th December - Diagrams 28, 29 and 30 are introduced which sees two 9-Car Electric diagrams added and one 9-car Bimode diagram added.
The 9-car electric diagrams seem to be largely replacing what the 9-car bimode trains are working currently (London to Leeds, Edinburgh and Glasgow) freeing up the Bimodes for non-electrified routes, in turn allowing the HST's to be withdrawn. By 9th December, only three HST diagrams will remain.
The following week (15th December), the Harrogate services start according to a news article on LNER's website. I don't have any diagrams for those yet but I wouldn't be surprised if that will see the removal of the final 3 HST diagrams.
If you want to see the full diagrams, please find my FOI request and the attachments provided here:
https://www.whatdotheyknow.com/request/request_for_current_azuma_225_an#incoming-1461035