I only rode against the on coming traffic , because out of reflex ,after riding in Ireland and Scotland for 9 months ,
when seeing a car coming, on a narrow road, i took to the left shoulder ..
City of London English Capital, is such a Jumble of one way and other streets and tourists not used to seeing right drive cars and left lane roads
they paint 'look right' and 'look left' on most-all Zebra-Crosswalks.