Roland Perry wrote:
On second thoughts, I'm going to narrow the definition to things
commissioned by the person. So Boris/Wellington/Belisha/Hadrian count,
but St Paul's and Christ's don't.

Nor does Cleopatra's Needle (and it's not transport related either).
Thutmose's Needle doesn't have quite such a ring to it...

I don't think it's meaningful to count places in this definition.

It's natural for humans to name places. Commonly places are named after
geographical features (South Bend, Midhurst) or people (Pennsylvania,
Edinburgh). In the British Isles they're frequently named in languages we
don't speak any more, but that's beside the point. Some places with
'people' names are actually 'feature' names - St Mary Cray is named after
the church dedicated to St Mary the Virgin, which is a thing not a person.

So Baker St, Russell Square and so on may have been commissioned by those
people - but the stations aren't named after people, they're named after
places named after people. There are an awful lot of things named after
people, many of whom had some hand in the place that bears their name, and
most of those places will have some transport connection (eg a bus stop).

So, anyway, back to things commissioned by people (that are still in common
usage)...

Theo