The new regime came into force in England and Wales on 1 April 1991. It is being phased in three blocks. Operators of existing industrial plants in block 1 were due to apply for authorisation by 30 September 1991. Applications for block 2 processes were due in between 1 October 1991 and 31 March 1992, and for block 3 processes by 30 September this year.
According to a parliamentary answer by junior Environment Minister Tony Baldry last No