My Son-in-Law has just booked KGX to EDB 12 midday this Friday 16 Aug HST (Highland Chieftain to INV). LNER site would not allow any seat reservation, presumeably because the train will be rammed (Edinburgh Festival, English Holidays, etc). Latest HST-seating-map-updated april-2019.pdf shows seats in the southern end nos 1 to 45 (minus priority) of Coach G as Non-Reservable, together with a smattering among the other Coaches. Does anyone know if, in reality, upon boarding, will that block of seats all be displaying Unreserved? I've told him about the Seat Sensor App, but this is no use until the journey is underway, I think?