The Telegraph has an live map displaying both current and past flash points. London Riots Map maps tweets that mention the riots and a British post code. Channel 4 has a timeline map. BBC has an traditional map with video embeds and a timeline on the side. There is a reputable Google Maps map called London Riots/UK Riots which is doing the best one can to verify information before mapped; this map is receiving some good news coverage. Finally, The Sun has a map labeling neighborhoods where riots have occurred.
Update: The Guardian has a verified incidents map of all of England.