In message , Paul Corfield
writes

"Paul Terry" wrote in message
...

Are you saying that trains will not actually run in a circle but would
effectively reverse in the appropriate platform? Passengers would be
forced to change in order to complete a cross Clapham Junction journey?

Yes, that's my understanding. On the map accessible from ...

http://www.bbc.co.uk/london/content/..._feature.shtml

Clapham Junction is shown as an interchange between the clockwise and
anticlockwise routes, rather than as a through station.

I guess it would be possible for trains to reverse at Clapham Junction
and continue round the circle, but I imagine that it could produce all
sorts of operating problems.
--
Paul Terry