Northern Rail serves, surprisingly, the north of England.
If you'll be around and can bag one of the bargains they are a good deal.
Northern Rail has has a new schedule since December and has has some issues, so this is sort of a payback - get on the plan if you can.
The FLASH sale has already started and runs until 4pm England time on Friday, January 13 and tickets are valid for travel between Tuesday, January 17 and Friday, March 10 on Northern services only.
The tickets have to be bought on their website or app.
For the GWR tix scroll down to Marco's post below