1. Smart meters are currently not compulsory.
2. Meter brackets are the responsibility of the energy supply company as it is classed as part of the meter installation and is a safety and security component.
3. Smets2 Meters will transfer between suppliers when changing energy provider. Smets1 meters are no longer being installed.
4. Dual band comms hubs are being rolled out shortly to improve connectivity between meters in situations where the current 2.4Ghz HAN signal is blocked by building infrastructure or excessive distance between the electric and gas meter positions.
5. Smart meters currently communicate using SMS over 2G or 3G networks. This will soon become a huge problem for the energy providers as the 2G and 3G networks are to be switched off in the not too distant future. This will require as a minimum, that the comms hub on all current installations be replaced. More disruption to the customer. Can't see this being a 5 minute job.
6. Smart meters are a 'whole installation' monitoring device, no different to the heritage meters (non smart) previously used. Yes the energy provider can see peaks and troughs in usage however, they cannot use this data to force a change in tariff or when you use heavy load devices GDPR rules apply here.
7. If an energy company fits a smart meter and subsequently find that they do not have comms with it, they can not charge the customer to have the meter read. They must rely on customer readings and take readings during the billing year to ensure those readings are valid.
8. A smart meter will NOT 'save you money'
The rollout has cost somewhere in the region of £11 billion so far. Further costs will be incurred before the rollout is complete and the cost is being borne by the consumer whether you have a smart meter or not it will be part of your energy cost.
Anyone want to hazzard a guess as to which industry I have been involved in. I still have dealing with industry professionals through my work and so keep up to date with changes etc.