Gwr journey planner incorrct?

[Jamiescott1]

Looking on the gwr app for trains tomorrow from marlow and according to the app, a full weekday timetable is running with half hourly service at peak times.
The gwr changes to journey times poster states there'll be an hourly service on the marlow branch tomorrow.

Assuming the app is incorrect, how do I find out the actual train times for tomorrow?

 

[800002]

These are the services currently planned to operate, tomorrow, at Marlow. At this point in time.

Realtime Trains | Just a moment

Realtime Trains is an independent source of live realtime running information for the Great British railway network.

www.realtimetrains.co.uk

There will always be the possibility that GWR (or any operator) will change their plans upto 2200 the day before, and supply Network Rail with the requests to alter their train plan overnight.

A full Monday plan is currently in the system.

If on previous Bank Holidays, with no major engineering work or events to cater for has seen a reduced service operate, I would check again in the morning before leaving home.

== Doublepost prevention - post automatically merged: 24 May 2026 ==

The gwr changes to journey times poster states there'll be an hourly service on the marlow branch tomorrow.

There is also the possibility the poster:
Was mis described at conception, noone noticed.
Was correct at conception, but plans have changed after publication
Was correct at conception, but noone told train planning / train planning misinterpreted or just plain forgot.