These are Freephone numbers where the caller is able to make free calls from anywhere in the UK. The call is paid for by the receiving party and are often used as a marketing tool to increase business and develop customer loyalty.

Callers are charged at a national rate and the 0870 numbers can generate revenue for the receiving party.

This is a fixed national rate number, callers are charged at 10 pence per minute regardless of where they call from in the UK. The revenue generated for the receiving party is higher than that generated by an 0870 call.

070 numbers can be attached to any number including mobile or international numbers. They are personal numbers and are assigned to the customer for life allowing inbound call continuity even if the landline & mobile numbers change.

This is a premium rate number and generates the highest level of revenue. Often used for information services or technical help lines, the caller could pay up to £1.50 per minute.

Satellite Global Positioning System numbers are the most expensive numbers to call. They are used to communicate with people anywhere in the world via satellite technology.

There are several different numbers that are categorised as special numbers. They are commonly service numbers and include the following: