After spending 2 days in London and taking taxis instead of the S, leaving it at the hotel, it became very clear to me why there are so many places in London with a SuC, and probably more will follow. There are (almost) no public chargers around, and public parking can cost around 20 GBP an hour! I spoke to one taxi driver and he told me from 2018 on only electric taxis will get a new permit. So after that year within 3 years only taxi's that are 100% electric will be driving the streets of London. Biggest issue the guy said was that there are no plans so far to build a good infrastructure to charge all taxis. Well, it seems Elon, the clever guy he is, is making sure he has charging points available all over London which can charge on a very high speed the vehicles and also convenient as it is are placed at places were many tourist go, so therefore also taxis go. Like London Tower, shopping malls, shipping docks. So when in 2017 the model 3 is out, (big enough for tourist that go from hotel to the centre or shopping mall) and with the S for trips back and forth to the hotel from the airports and perhaps some at the large shopping malls when your wife goes on a shopping spree you will see the EV taxi revolution in London with Tesla Cars.
Only issue is, people want to have the typical London taxi look. So maybe this will be a project were Elon will provide the battery's, charging system inside the car and opens the SuC network.
What ever will happen, I am convinced Elon will be part of it, one way or another.