Disaster struck a week before Christmas, MIL's boiler stopped working. Frantic calling around and a plumber came in, only to say the old boiler was not worth fixing and to get a new one installed. Faced with a festive period with no heating or hot water, with all the grandchildren due to visit, MIL quickly arranged for a new boiler to be installed. New boiler in place now, working beautifully. Plumber has sent bill but no other paper work. Should MIL be getting some sort of certificate (CORGI or whatever they are called) from the plumber?
Years ago we had new gas system put in, and job was done well, but later we discovered guy wasn't CORGI registered (as didn't want to pay the membership fees) so we had to have another guy who WAS registered certify the work.