I am changing trains at Preston next Wednesday changing from the Euston to Edinburgh service. This is due in at 09:51 but is regularly (virtually always from the dates I have checked) late arriving at Preston. I am changing onto the 10:04 Northern service to Barrow-in-Furness. The Virgin service is booked into platform 3 and the Northern is platform 5. Where is the best coach to get off the Pendolino from to change platforms if it becomes a quick connection?