Roy wrote:
I'd hazard a guess that Chatham might hit over 12ph at the morning peak.

If busy NR platforms rarely have much over 12tph, it's a reminder of how
lightly used they are. I doubt that there's a single LU central area
station that has as few as 20tph in the peaks. The busiest dozens have
30tph or more. And none of these hundreds of trains has fewer than six
carriages, all of which are packed in the six or so peak hours.