The United Kingdom has its own version of the "Do Not Call List" known as the Telephone Preference Service (TPS). Any citizen of the United Kingdom can register for the list that aims to eliminate its participants from receiving unsolicited calls from organizations including charities and political parties unlike the United States and Canada. TPS was first enacted in 1999 and eventually saw changes in 2003 that ultimately created the Privacy and Electronic Communications (EC Directive) Regulations 2003.[19] While the TPS prevents unsolicited sales and marketing calls, it does not prevent "recorded/automated messages, silent calls, market research, overseas companies, debt collection, scam calls"[20] according to the TPS website.