Under Government legislation introduced on 1 May 1999 it is unlawful to send an individual an unsolicited sales and marketing fax without prior permission. Businesses have the opportunity to register fax numbers on which they do not wish to receive direct marketing faxes.
You can do this by registering with the Fax Preference Service. Although this Service is primarily aimed at businesses, as individuals have protection under the legislation, individuals may also register their fax numbers if they wish.
Before you apply however, you should be aware that registration may preclude you or your business from receiving information of value - thereby cutting you off from worthwhile business opportunities.