I've heard that TfL control all of the traffic lights in London... would
that include the one in Beechcroft Rd SW17?
The road is wide enough for two lanes of traffic, but it has been
deliberately narrowed by barriers to one lane, and rather than give one
direction priority (as they usually do when they deliberately narrow the
road to one lane) they have installed traffic lights to alternate the flow.
If Boris wants to retime lights to reduce congestion, he could retime this
installation to the scrapyard.

http://maps.live.com/default.aspx?v=2&FORM=LMLTCC&cp=51.506606~-0.130463&style=r&lvl...