That said, I'm presuming the map I linked to earlier has an error or two as with the points located where they're shown I can't see how you could reach platform 1 from the down line - fine when you're departing, but how on earth did they get trains into it!
I spotted that as well. It is possible with reversing of course, but at the cost of blocking the through lines while doing so. The current crossover to get down trains into platform 1 is just south of Holtwhites Hill, but nothing shown on that map series. Another mystery.