northwichcat
Veteran Member
There are no additional peak services in the Cardiff Valleys, merely the standard pattern throughout the day but which tails off later in the evening.
Just checked and that isn't correct in the case of Rhymney. Cardiff bound trains depart Rhymney at 06:08, 06:32, 07:00, 07:24, 07:42, 08:32 and then go an hourly service departing at xx:27. In the reverse direction arrivals are at xx:18 until 17:18 then the service goes roughly half-hourly for 2 hours, before going back to hourly with arrivals at xx:36.
There do also seem to be some arrivals at Cardiff Central which don't have a return passenger working e.g. http://www.realtimetrains.co.uk/train/P71690/2017/08/01/advanced