- Jan 20, 2006
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Oh really? I've used the Overground a fair bit and only ever seen 4 carriages. I'm not doubting you though!
It depends on the platform length. The length of trains on the Barking-Gospel Oak line is severely limited because of this, and so is that of the Welwyn/Hertford North-Moorgate services. The West Anglia lines have much longer platforms.