It is a legal requirement that all organisations (including charities, voluntary organisations and political parties) do not make such calls to numbers registered on the TPS unless they have your consent to do so.
Organisations with which you have an ongoing relationship (e.g. who regard you as a customer, member or donor) may gather your consent during the early stages of your relationship with them and will therefore be entitled to call you even if your number is registered on TPS, unless you have previously told them that you object to them calling you for marketing purposes.
The TPS can accept the registration of mobile telephone numbers, however it is important to note that this will prevent the receipt of marketing voice calls but not SMS (text) messages.
TPS registration only prevents marketing calls, organisations will still be able to call you for the purposes of genuine market research. Register at TPS Online or by calling 0845 070 0707.