Using the Virgin Red smartphone app or at virgintrainseastcoast.com/blackfriday, today (Friday 27th) there's a 50% off East Coast trains Advanced Purchase tickets code available. Tickets need to be booked by 9pm today (or when 10,000 have been booked, whichever is first). Tickets valid for travel 4th January to 12th February, standard class advanced purchase tickets only. Anywhere on the Virgin Trains east coast route where AP tickets are offered should be covered. London to Edinburgh is normally "from £20", so with this you could potentially get to Scotland for a tenner in January / early Feb!