Here are a couple of map layer maps on top of Google Maps, using a GeoJSON source based on the OpenSourceMap charging point information and then on the locations of the BP, Shell and Ubitricity points in the UK.
Circle size is the power of the most powerful charger at a location. Color is the operator. Hover over shows you the main info on the top one and click on the second one.
It's nice because Google maps is fast, and is also fast, and GeoJSON is easy to use.

Takes a few seconds to load the data the first time.