The problem with the DN&S is that it was never treated as a trunk route (except for a short time in the mid 1940's). It should have been the through route for the Midlands and Northern traffic to Southampton, but that was always, as now, routed through Reading and Basingstoke.
Here's the 1934 summer timetable - so before your dates - showing via footnote a service that connects with the ship from (Le) Havre, runs up the
DNS▸ with through carriages to Glasgow and Edinburgh (and Scarborough on Saturdays). Leaving Southampton Docks at 07:05, it took 3 hours to cover less than 60 miles to Newbury ... must have been a real joy for continental travellers as they stopped to look at the beautiful scenery at Worthy Down Platform and Pinewood Halt.
