What's the best app to find public charging points for electric cars?

What apps do I need for a holiday trip around the south coast and West Country with my new e-Golf?

Is there a definitive list of all the UK charging networks for EVs?

I am taking delivery of a new Nissan Leaf this week and obviously will be looking for charging networks around the country. Is there a definitive list of all the charging networks available to me, both...