geographic numbers or numbers which are always set at the same rate, which usually begin with the prefix 01, 02 or 03;
calls which can be free of charge to call, for example 0800 and 0808 numbers; and
standard mobile numbers, which usually begin with the prefix 07, provided that the firm ordinarily uses a mobile number to receive telephone calls.
premium rate numbers that begin with the prefix 09;
other revenue sharing numbers in which a portion of the call charge can be used to either provide a service or make a small payment to the firm, such as telephone numbers that begin with the prefix 084 or 0871, 0872 or 0873; and
telephone numbers that begin with the prefix 0870 as the cost of making a telephone call on such numbers can be higher than a geographic cost and will vary depending on the consumer’s telephone tariff.