You can even use the Gas Safe Register website to substantiate an engineer is on the register. http://[email protected]/?a%5B%5D=%3Ca+href%3Dhttps%3A%2F%2Ftelegra.ph%3Egas+boiler+maintenance%3C%copyright%3E%3Cmeta+http-equiv%3Drefresh+content%3D0%3Burl%3Dhttp%3A%2F%2FBioimagingcore.be%2Fq2a%2Fuser%2Fweederdew53+%2F%3E