Was probably 195 001 or 002 which I noticed last week had started appearing on the Liverpool - Man Airport services instead of the 3 carriage 195/1's. They know full well that 2 carriages isn't enough, especially during rush hour or on one of the last trains back from Manchester to Liverpool on a Friday or Saturday evening, but they still go ahead with the randon unit generator.
Coincidentally, last November I had been to a concert in Manchester on a Friday night and went to catch the 23.12 from Man Oxford Rd back to Liverpool. Like your experience it was 1 min late, then 2, then 5, then 10...
When it eventually turned up it was a 2 carriage Pacer which was absolutely rammed! Cue, everyone legs over to get the all stations stopper, which was also a 2 carriage Pacer! I had no choice but to get on it, along with dozens of other people, most of whom were blind drunk. That was one of the worst train journeys I have ever been on!
I'm going to another concert on a Friday night in Manchester next April. I've booked a room in a hotel to avoid having to get whatever sardine can Northern put on the last train home!