Under section 17(6) of the 1987 Act power was given to direct by order in Council that section 2 (but not section 3) of the 1987 Act should extend, subject to modifications, if any, to any of the Channel Islands.

The next stage is that the United Kingdom Parliament enacted the Criminal Justice (International Co-operation) Act 1990 ("the 1990 Act"). As the long title shows, one of the aims of Parliament was "to enable the United Kingdom to co-operate with other countries in criminal proceedings and investigations". This included giving effect to the 1959 Convention. Section 4 of the 1990 Act provided for the provision of UK evidence for use overseas. The Secretary of State can receive requests for assistance in obtaining evidence in the United Kingdom from courts, tribunals, or prosecuting or other relevant authorities in foreign countries. The Secretary of State (or the Lord Advocate in relation to Scotland) if satisfied

(a) that an offence under the law of the requesting state has been committed or that there are reasonable grounds for suspecting that such an offence has been committed; and

(b) that proceedings in respect of that offence have been instituted in the requesting state or that an investigation into that offence is being carried on there,