1506 gurgled happily, sounding much like
they were saying:

Baker Street certainly had/has a bar outside the barrier line.

There's a 'spoons above Baker St station, but access is only from outside.

Moreover , it seems possible that having bought a drink at Marylebone

....except they've closed the little corner shop in the concourse, in
order to refurb it into another chain sandwich place...

one could travel to Amersham whilst enjoying a drink on a Chiltern
train. If one bought a drink at Baker Street one would not be allowed
to consume it whilst travelling, over the very same metals, on a
Metropolitan line train.

Indeed.