We're selling our house. A few years ago, we had a light installed in our Kitchen. Our buyers solicitor has asked for an electrical safety certificate for this installation. An Electrician inspected the house. He said we had an "excellent Earth", and said we had passed. I paid him and he said he would write the certificate that evening and drop it off at the house. The next day he called to say we needed a "PME" and I needed to call the power distribution company to install it. I called them and they said "We get this a lot from electricians. You don't need a PME. Your house is old, it has copper water pipes" followed by a load of stuff I didn't understand. I text my electrician, but the electrician said he wouldn't sign off without one. I paid the distribution company just to get it done (we've already had to postpone our moving date) and they are coming today to install it. Yesterday, my neighbour sent his Dad over (he's a retired electrician). He says none of the houses on this street have a PME. He says a PME is unnecessary as I have a good earth (he tested it), and I also have an "Earth spike" - he also said he's been retired 12 years, so the rules may have changed. It was only £201 for the PME and the electrician is charging £100 to connect it, so its not a silly amount of money. I just don't like wasting money on stuff I don't need. It's bugging me. I want to give the electrician the benefit of the doubt, but I have this nagging feeling we're being cheated.