dangerous substancemeans any substance which is dangerous for conveyance within the meaning of the 1984 Regulations, and any reference to “dangerous substances” (except in Regulation 6(5)) includes a reference to one dangerous substance;
Part I of BS 5378means British Standard number BS 5378: Part 1 1980 entitled “Safety Signs and Colours Part 1.
sitemeans– (a) the whole of an area of land under the control of a person and includes a pier, jetty or similar structure whether floating or not;
the 1984 Regulationsmeans the Classification, Packaging and Labelling of Dangerous Substances Regulations 1984;
the Executivemeans the Health and Safety Executive;