You can even use the Gas Safe Register website to verify an engineer is on the register. http://[email protected]@[email protected]@wellho.net/test.php?a%5B%5D=Emergency+plumbing+%28%3Ca+href%3Dhttps%3A%2F%2Fsquareblogs.net%2Fgymgoose55%2Fthe-benefits-of-regular-drain-line-and-furnace-inspections%3Ehttps%3A%2F%2Fsquareblogs.net%2F%3C%copyright%3E%29%3Cmeta+http-equiv%3Drefresh+content%3D0%3Burl%3Dhttps%3A%2F%2Fwww.metooo.io%2Fu%2F66bb2ac44385191191ca7916+%2F%3E