I have just returned from collecting an offspring from a train. I was directed to drive to the platform 1 side of the station which completely nonplussed me since I don't remember pickup points that way. As it happens it was the "down" line but it led me to wonder if there is a standard way of numbering platforms; for example start with platform one on the down side and work across to the "up". It works for Reading and Paddington but that's hardly a representative sample. So is there a system or is it just "pot luck"?