(1) This Chapter deals with the transfer of personal data to third countries or international organisations, as follows -
(a) sections 73 to 76 set out the general conditions that apply;
(b) section 77 sets out the special conditions that apply where the intended recipient of personal data is not a relevant authority in a third country or an international organisation;
(c) section 78 makes special provision about subsequent transfers of personal data.
(2) In this Chapter, "relevant authority", in relation to a third country, means any person based in a third country that has (in that country) functions comparable to those of a competent authority.