I think people are missing the point here, fact is, CO kills! More often than we are led to believe as the cause of death is sometimes missed during a standard postmortem. Unless you pay for specific tests that detect death by CO poisoning. It is a scary thought that people risk their own and their loved ones lives to save pennies. Rogue gas engineers are putting lives at risk. You cannot put a price on life, unfortunately, some learn the hard way. Gas Safe only become aware when certain engineers are highlighted on the radar. The company I work for are working with GSR to try and strengthen the checks required before any gas engineer is able to carry out work on a gas appliance or gas pipework. I pray in the meantime, there are no further fatalities!