I'm forever being reminded that Northern doesn't miss an opportunity to stop running trains. When, a few years ago, I started to get back into train travel I did notice that, whenever there were late-night engineering works taking place on my local line, there were trains which could really have run, but didn't do. Well, why run trains when you can get compensated by NR for not doing?
Yesterday, we had the security alert at the Airport. Any sets operating Liverpool semi-fasts at the time (which, as it happened, was only two out of the three scheduled) were allowed to return to Lime Street but were then grounded until the alert was over.
Hmm. The fact that there might be a security alert at Manchester Airport wouldn't strike me as any reason to not run semi-fasts between Liverpool Lime Street and, say, Manchester Oxford Road. Ah, I hear you say, that would take out a platform at Oxford Road. It wouldn't, the timetable effectively facilitates a more or less immediate departure - arrivals at Oxford Road are generally xx.07 and departures xx.12, or thereabouts.