When first built, the Bishops Road platforms were regarded almost as a separate station and all four platforms 13,14,15 and 16 had four rail electrification and connections through to the Circle line. In a 1960s remodelling, the Hammersmith & City line trains were moved to platforms 15 and 16 and 13 and 14 disconnected from the Circle. In a more recent change, platforms 12 and 13 were amalgamated as one long platform and is now often used when there's a 12 coach 387. Platform 14 remains short, six car Turbos would fit, not sure about 8 car 387s.