Here is another article on the same subject but with the actual costs for each charging package.
Pay-as-you-go and membership rates are available: PAYG costs 39p per kWh drawn, while a ‘casual plan’ unlocks 200kWh per month for a monthly fee of £48.99. A ‘plus plan’ costs £67.99 per month and allows up to 400kWh of energy monthly, equating to 17p per kwh.
The latter of these would allow four full chargers of the Tesla Model S 100D, in this instance delivering around 1,340 miles of real-world range in total.
It could also be used to charge a Volkswagen e-Golf fully more than 11 times over, returning some 1,450 miles of range in real-world driving conditions.