In this Part -

"commercial information" means information relating to any business of an undertaking whose disclosure the public authority concerned or, for the purposes of section 243C the Secretary of State, thinks might significantly harm the undertaking's legitimate business interests;

"confidential information" means commercial information, private information or sensitive information;

"overseas public authority" means a person or body in any country or territory outside the United Kingdom which appears to the discloser (within the meaning of any of sections 243A to 243C) to exercise functions of a public nature in relation to anything mentioned in sub-paragraphs (i) to (v) of section 243A(1)(b);

"private information" mean information relating to the private affairs of an individual whose disclosure the public authority concerned, or for the purposes of section 243C the Secretary of State, thinks might significantly harm the individual's interests;

"sensitive information" means information whose disclosure the public authority concerned or, for the purposes of section 243C the Secretary of State, thinks would be contrary to the public interest;