As to the commencement of this Act, see further Halsbury's Statutory Instruments, 1983, vol 13, pp 268 & 360; Halsbury's Statutes of England, 3rd Ed, 1985, Cumulative Supplement Part 1, para 1115; Halsbury's Laws of England, 4th Ed, vol 30, p 315; Northern Ireland Agriculture, p 132; Williams, Animal Feeding Stuffs Legislation of the UK, 1987, p 9.