Don't think that was me, or if it was then I didn't make myself clear! I was thinking back to the days when some proper Inter-City trains called at Slough as a West London railhead, which saved having to travel all the way out to Reading on a local train. Those local trains are now I suppose rather quicker than the old DMUs▸ were so it probably balances out.
I remember them well when a good number of Bristol to London trains used to stop at Slough.
Also, whilst writing. Most semifast London - Exeter/Paignton/Plymouth services will now call at Hungerford from the start of the December timetable in addition to the trains that already stop there.