Not really sure what the point of that service is.

I think though there's loads of reasons why a late night train would be busy from London to major cities (Birmingham, Bristol, Cardiff, Leeds have all been mentioned in this thread).
The reason given at the time with regards to the 2330 PAD - CDF via BRI was to give theatre goers an opportunity to travel back home afterwards. No doubt handy for late-night revellers for getting home I suspect. Whether the set then stays in Cardiff or goes ECS to Landore I don't know, assumed to be the latter.
I've not been on it myself but I've heard the 01:05 Waterloo to Southampton can be fairly busy considering the time.I think though there's loads of reasons why a late night train would be busy from London to major cities (Birmingham, Bristol, Cardiff, Leeds have all been mentioned in this thread).

Never used to run to Cardiff though, I know a couple of people who had booked a travelodge or similar in Cardiff for a 37 tour and missed the 2245 ex Pad (is that the last Swansea?) and had to do the 2330 which went as far as Bristol T M for a nice night walking around Bristol![]()