I was persuaded by the dulcet tones of a rep of the power coompany to go for the Smart meters, they were claimed to be SMETS 2 meters. I asked the persuader how the signal got from the gas meter to the power company. He said that a cable woulld be used to connect the gas meter to the electricity meter and thence by 3G/4G network.
How would the cable be installed between the two meters I asked, there is always a cable between the two meters he said, I challenged this fact. I was not happy with the response and hit Google to find out that in the Gas meter there is a longlife battery to power a transmitter in the gas meter so it can talk to the electricity meter
The smart meters were installed - took about an hour, the fitter had a relatively easy task as the meter boxes were on the outside wall on a footpath. Changing meters in cramped understairs cupboards can be a challenge. It was a also a fine day so no rain.
After a month I went to the power company web site to see how the usage information had come across to find that there was no gas reading. Rang the power company and they asked me to press the blue button on the gas meter, however I have to check the online reading to see if it is working. It appears to be working - but it is not as good as doing it manually and entering the numbers into a spreadsheet.