Nope - I was definitely thinking of Marsden. Every time I've been there by train I got off on P3... then straight down the hill to the Riverhead via the Railway Pub
Actually, that's a good point about Marsden calls only needing one platform, it only has an hourly service and the trains don't call at the same time. P3 is the accessible one, trains could call in either direction were it not for the need to block the lines while crossing over (and there isn't a crossover going west to east, that I can see. Or one new, accessible island platform in the centre with fast running lines on either side (but then you'd run the risk of drunks running across the tracks like they do at Mirfield). Mirfield still needs two platforms as there are three trains per hour in each direction, I think? Then again, that's the same as Castleford...