You suspect correctly. That no such test exists is the response I am getting form electricians I contact. All are happy to offer T&M exploratory work oddly enough.
Looks like we simply instruct BG to disconnect the service and see who complains. We will of course notify everyone of this in...
I have an interest in a block of 9 flats in Coventry where we are being billed for a meter that we cannot find. There are 2 meters on the one bill but we only pay 1 Standing Charge which feels odd. BG insist it is located in the building and that we should conduct a 'Trace & Label' test.
So...