介绍性文本1.引用和推荐2.铁路安全（杂项规定）条例19973的修订。转基因生物（包含用途）条例20004的修订。建筑（设计和管理）条例20075的修订。化学品的修订（危险信息和供应包装）条例2009签名解释性说明

Introductory Text1.Citation and commencement2.Amendment of the Railway Safety (Miscellaneous Provisions) Regulations 19973.Amendment of the Genetically Modified Organisms (Contained Use) Regulations 20004.Amendment of the Construction (Design and Management) Regulations 20075.Amendment of the Chemicals (Hazard Information and Packaging for Supply) Regulations 2009SignatureExplanatory Note