Paul Weaver ) gurgled happily, sounding much like
they were saying :

Ah, if only there was such a thing as a bus with an open platform you
could just hop on and off as required...

Perhaps a bus with a smaller turning circle than the current buses,
enabling them to move quickly arround the narrow London streets
without causing major blockages to multiple lanes, and in the case of
bendy buses, and even the normal ones.

Perhaps you could somehow segregate the driver from passangers, as in
trains, allowing the driver to concentrate fully on the road instead
of checking tickets? Maybe a guard could be employed, as on trains, to
check and sell tickets, and assist passangers (which the driver can't
do)?

If you can't afford a guard on every bus, have a "buy before boarding"
policy, and enforce with RPIs like on the trains and bendy buses that
we have.

Heck, you could even make it twice the height and half the length. If
you're *really* clever, you could even build it using aircraft technology
to make it very lightweight and fuel efficient.

does anyone know of a bus that would fill those requirements?

If such a thing existed, it'd quickly become an icon of the city, I reckon.