Indeed, I was going to say that The Sheffield Tap is handy; I'll often retire there for an hour, or maybe two, to await a later train if one looks likely to be busy, as I have the flexibility to do so.
Though I am slightly surprised that an early Friday afternoon EMR Sheffield - Liverpool service was reported as busy when it, and the preceding EMR service, was running with the correct 4 coach formation and there were no adjacent cancellations. I am of course aware that it is a well used service, and I seem to have been quite fortunate in the trains I've used over that route recently.