Picked up mine from manchester last week. I called them twice before hand, both times they picked up within a minute by doing what eddycrim says. They're really nice to deal with there, both on the phone and in person.
My pickup wasn't until 12, but I arrived at 9 to see if there was any chance of picking up earlier and if confirm that I would have a full charge as I had to head for Ferry back to Ireland.
They told me they had my car charging to max and would take another 2 hours. I was picking up an SR+, but they let me take a performance model out for 2 hours until the car was charged.