0871 Business numbers are ideal for national and international business. The free service can be diverted to any UK landline or "big four " mobile networks, plus destinations in Bands 1 & 2 , all at no cost to you. For call prices for diversion to Band 3 see our Price List.
They also have the added advantage of having lower calling costs than with Personal numbers, but the exact rate will depend on your phone line or mobile supplier.
If your use is not business-business only, then you must indicate the price of the call to consumers. This can be done on stationery and adverts or by using a announcement the choice is yours.