First Look at the New Timetables for Southern Line from 15 December

From 15th December 2023, there will be a major update to the Southern Line timetable due to the opening of the double track project. It will now be one hour quicker to get Hua Hin, and 3-4 hours quicker for the far south. Click the image below for a full size. I will release a guidebook to the new Southern Line timetable soon.