Bicycle Tag of bike

as a hill it was a big disappoinment, not getting particularly steep at any point and not going on long enough to make you work

Well yes, zone 1 is pretty much flat as a pancake! Maybe coming out of the aldwych underpass is steeper? Someone could go round with a GPS and find zone 1's true steepest street, but it would still be not very steep. I don't have a GPS, so this is being delegated to someone else. :)