xmlns:atom="http://www.w3.org/2005/Atom"
11. Immediately after regulation 41 there shall be inserted the following regulation:–
41A. In any proceedings for an offence under regulation 40(g) it shall be a defence for the person charged to prove that each alteration in respect of which the offence is alleged was effected under the written authorisation of a person capable of effecting that alteration without contravention of that provision.”.