Following on from the discussion about LT zones, a question that's
always bothered me. Why is Hampstead Heath station on the North London
Line in Zone 3? With Archway and Hampstead both on the 2/3 boundary,
it can't possibly be geographical - it seems there purely to bump up
the revenue from this popular station, and for east/west traffic on
the NLL. Which seems very cynical, and a bit pointless: anyone who
regularly travels on that line soon learns how shoddy it is at
actually collecting revenue.

Or am I missing something?

R