Just to point out that Tesco charging points have increased their prices from 28p per kwh up to 50p. Not sure if this is everywhere or just my area (pembrokeshire) but worth keeping an eye on it.
Not quite sure what the problem is with plugging in and going shopping for an hour. Surely that is exactly what they were put there for?I wonder how long it will be before they remove the 15 minute grace period and I think they should as it encourages misuse and it causes charging spaces to be taken up by those who just plug in and go shopping for an hour.
I was a bit miffed that they start charging (price) you from when you connect, so when you confirm the charge you don't get 15 minutes free.