We have received the below information from Great Western Railway with regards to train services for January:
"Due to continued staff reductions and tier announcements, we will continue to run a temporary timetable this week (commencing Monday 4 January). Details can be found on gwr.com and we are reminding customers to check timetables before they travel.
We know how important it is to offer consistent, robust timetables. We want to avoid ad hoc on the day cancellations, and we know customers need information more than a week ahead. We are therefore working with government and colleagues to review our January/February timetable, taking into account the latest changes to tiers, and I will be in touch again early next week to let you know our plans."