These regulations (ISBN 0 11 079655 1) are a United Kingdom Statutory Instrument regulating various activities relating to the safety of installations and appliances using Natural gas and Liquefied Petroleum Gas (LPG). Note that there is no reference in the UK law or in HSE to "Landlord's gas safety certificate" - only to having a "record" of an "annual gas safety check". However the following is generally required by *UK law. * Gas Safety (Installation and Use) Regulations 1998 S.I. 1998/2451