Quote Originally Posted by joebloggs View Post

sign up to opt out 'the Telephone Preference Service (TPS) is the central opt out register on which you can record your preference not to receive unsolicited sales and marketing telephone calls to your home or mobile telephone numbers'.

http://www.tpsonline.org.uk/tps/
Not much good for anyone calling from outside the UK. My number is ex-directory but we still get calls from Manila trying to sell us Globe calling plans or holidays in Florida. Normally if I get any calls from overseas I start talking in Welsh to them, and they soon give up.