<p>To ask the Secretary of State for Work and Pensions, if he will amend legislation on gas safety checks undertaken by landlords to ensure that the person making the check must either (a) undertake a service according to manufacturer’s instructions or (b) follow the procedures in part four of BS7967 to use Flue Gas Analysers meeting EN50379 to measure the combustion gases for (i) parts per million of CO and (ii) the ratio of CO to CO2 and keep a record of those measurements.</p>