provision to enable orders equivalent to those under Part 8 to be made, and warrants equivalent to those under Part 8 to be issued, for the purposes of an external investigation;

provision creating offences in relation to external investigations which are equivalent to offences created by Part 8 F1and section 453B.

provision corresponding to any provision of Part 8 (subject to any specified modifications);

provision about the functions of the Secretary of State, the Lord Advocate, the Scottish Ministers, F2the Department of Justice in Northern Ireland, F3F4the National Crime Agency or its officers, the Director of Public Prosecutions, the Director of Public Prosecutions for Northern Ireland, F5... the Director of the Serious Fraud Office, constables and customs officers;

provision about evidence (including evidence required to establish whether an investigation is being carried out in a country or territory outside the United Kingdom).