Registration numbers by region and area code

The Telephone Preference Service (TPS) is a central opt out register whereby individuals can register their wish not to receive unsolicited sales and marketing telephone calls. The Corporate Telephone Preference Service (CTPS) is a list of organisations (limited companies, public limited companies and Scottish partnerships) who have registered their wish not to receive unsolicited direct marketing calls. It is a legal requirement that companies do not make such calls to numbers registered on the TPS.

So how many have registered with these do not call registers?

There are 23,662,680 numbers registered on TPS, and 2,330,466 numbers registered on CTPS (figures correct as of 13/12/2017).

Area telephone prefixes information obtained from The Phone Book