Roland Perry wrote:

Is this the only station with more than one company operating a ticket
office (excluding the Eurostar ticket office for a moment)?


Stevenage has an FCC and a GNER, sorry, NXEC office. The latter is
frequently unused when there are queues at the FCC window as it
isn't so obvious. (Its opening hours are also much shorter.)

But the staff are good at directing passengers
to the other office for tickets when the queues get long, despite
the reasonable comments others have made about lost commission.