The connection has been made:

"The route between London and continental Europe is now energised, thanks to the new Supercharger in Maidstone."

Now, with ease, Tesla Model S owners in the UK can get onto continental Europe and continue on from there with free charger along the way.

Europe's Supercharger network is growing at a rapid clip.  In the last days of November, 105 Supercharger sites were listed as online in Europe.  This figure is closing in on the 135 listed in the U.S.