Update: The route index is now working. Happy reading. For tables 123 and 125, and others of course, you will need the alterations booklet, also available on this page as many services are missing on the main pages. But even the alterations booklet has services missing as well! But this will get updated regularly over the coming months.
I understand that eventually Network Rail will be able to provide a National Rail Timetable where alterations can be easily added to current pages so a list of alterations will no longer be required...can't wait!