There are a variety of pedestrian crossings on my route, the odd few Zebra, and quite a few Pelicans and Puffins. Norbury seems to be traffic light pedestrian crossing central. Depending on the time of day, you seem to either progress about 50 foot at a time between red lights, or manage to shot through the entire lot in one go late at night, after the cafes, restaurants, and pubs have closed.
I reckon on adding about ten minutes to my fifty minute or so of cycling, just waiting at lights.