179.Section 74 contains provisions regarding subsequent reviews and revision of the code of practice. It allows Ministers to revise the code in light of a review. The Scottish Ministers must review the code within two years of it first coming into effect. Thereafter the code must be reviewed at least every four years. When deciding when to conduct a review, Ministers must have regard to representations made by the Scottish Police Authority, the Chief Constable, or Her Majesty’s Inspectorate of Constabulary in Scotland (HMICS).