Thank you both for your answers. I am actually registered with the telephone preference agency which is why I was surprised to get these calls. Now you say Leicester I have a neighbour who has just gone into Leicester Hospital I wonder if he is trying to ring me??? I shall try the google idea and thanks again for help.
Put the full number in google and got a whole page of similar questions. Wonder how they dodge the telephone preference service. If you are interested enough to look the number is 01162293700. Thanks again