I've had UK Power Networks pull the cable through and fit the main fuse. The meter installer is coming next week. I've now had an email to say I will need to show the installer an ICERT before he will fit the meter. I rang them up and they said not all installers want to see an ICERT but if they do and you don't have one they will leave and still be charged. My electrician mostly works on new developments and hasn't heard of an ICERT. Has anyone been asked for an ICERT before a meter will be fitted?