Don't wish for permits - you'll regret it. You can have as many as you like anyway, if the vehicle is registered at that address. And when permit bays are painted in, they never leave as many spaces as were there before. Plus the added hassles of having to have a book of visitor passes (5GBP-10GBP a pop) for tradesmen and relatives. Plus, permits are not effectve on the weekend when most parking congestion occurs from shoppers. Unless, like in Australia, the permits issued free only to residents of a particular street, but that would never, ever happen over here - too sensible.