A service established by the Direct Marketing Association to help reduce the number of unwanted telemarketing calls received by customers.

Program of the Direct Marketing Association that allows consumers who do not want telemarketing calls to have their names removed from a majority of telemarketers' lists with only one request.

This is a service that was established by the Direct Marketing Association with the aim of helping to reduce the frequency of unwanted telemarketing calls that customer received. Customers had to contact their telephone company in order to join. Their details were then removed from the lists that many companies engaged in.

The Telephone Preference Service (TPS) is a UK opt-out telephone list that is intended to prevent telemarketing calls to those who do not wish to receive them. The administration of the list is performed on behalf of Ofcom by the British direct marketing industry, in a similar way to the Mailing Preference Service. In November 2005, the BBC reported that there were 10.5 million numbers registered.