On May 6, 12:08*pm, wrote:

On May 5, 11:48*pm, D DB 90001
wrote:

But this still wouldn't be an ideal outcome, Oxford already has fast
services calling at Reading and Slough only, and passengers for
intermediate stations would need to change at Reading, so you might as
well terminate the service at Reading, but this would reduce the tph
from Oxford to Paddington from 4 to 2.

No it wouldn't - there are already only 2tph from Oxford to Paddington
in any meaningful sense, as unless you're a great lover of spending
time on 16x-es instead of at your destination, waiting for the next
fast train is always the best option.[*]

[snip]

Except that (if I've got this right) in the evening peak you can use
off-peak tickets on the slower Turbo services but not on the HSTs, at
least for journeys leaving London - though to outsiders this
information is rather hard to come by.