And the overcharge is really only 6p , but they charge you a £1 to process it
It's a £1 administration fee.
The process as you call it goes through about three people before the fourth person which is the postman actually delivers you the form. Then a fifth person will get involved when you actually go to the callers office to collect it.
Its a ridiculous amount of work just because someone didn't quite put the correct postage on.