In message , at 15:50:03 on Thu, 10 Aug
2017, Graeme Wall remarked:

Anybody coming in from SWT territory got no advantage from the
switch as the saving in international journey time was neatly
cancelled out by the journey from Waterloo to SPI, which also
involved an extra two changes.

Cross platform at Oxford Circus is pretty trivial.
Probably quicker to switch to the Victoria Line at Vauxhall, in
practice.

Not when you are coming in from, eg, Southampton.

I'm not going to let pax from 2tph upset the general idea.
--
Roland Perry