A bit off topic, and I'm not sure where you sit, or how long it takes you to get out, but I walked back to Piccadilly, and shared the last train back to London with the Spurs fans, there were Spurs fans walking alongside me back to Piccadilly, and there was a few verbals going on, but not only did I see no escort, I saw virtually no police until I was inside the station, and I saw no trouble at all. There were police on the (stupidly overcrowded) train, and apart from sort out the odd disputed seat argument, the only thing they did was come round handing out water.
Incidentally the train back was like being in India it was so overcrowded (OK they weren't on the outside), its absolute madness that there is only 1 train back to London after a London team play in Manchester, there are already enough City fans on these trains as it is, why don't they add another train or two ? Its not the first time.