Its really very good.
Appointment are pretty available for on the day. That said, when I called in this morning I was in a queue. I worked way from 19 to 16 and then I was cut off! I called back and was cut off again! I gave up at that point and tried again at 12.00, waited in the queue for 20 mins. but I did then get an appointment. Other than that (and being called in late) it is all really very good.