The key restrictions were that the UK Government and devolved governments:
i) were unable to change the definition of what an establishment was (in short, a location where dangerous substances are present in significant quantities);
ii) could not lower standards on what constituted a dangerous substance (i.e. by removing categories of substances or individual substances from the list, or raising the threshold at which the quantity became significant and the establishment fell into scope of the regime);
iii) were required to ensure that the objectives of preventing major accidents and limiting the consequences of such accidents for human health and the environment were taken into account in their land-use policies, through controls on the siting of new establishments and new developments close to establishments;
iv) were required to set up appropriate consultation procedures to ensure that operators provided sufficient information on the risks arising from the establishment and that technical advice on those risks was available when decisions were taken; and;
v...