I know you can have a water meter removed again within a set time of fitting, but not a clue about smart meters.
With electric can't see the point, amps is close enough to watts to make no never mind, so amps times volts times hours = Wh which of course is wrong unit for energy so times by 360 (seconds in an hour) and you get Joules the international standards organisation unit for energy. Or at least it was when I went to school.
Gas is very different, a Therm = 1055.05585 joules or 252.164401 kCalories or 0.293071 Wh but when I read my bill it seems to have so many bits to it that it really is gobbledygook. However it is only used for central heating so it is rather simple, the more heating is used the more I pay, so why do I need to know anything other than the total bill that I need to pay? Well yes I suppose if there is a meter which shows the watts of gas used, then I can see if the boiler is flat out or ticking over, unlike electric I can't clip an ammeter on the gas pipe and work out watts being used.
This looks good, at last a watt meter for gas, however until one tries to use it one does not know how often is this refreshed? It says kW but is it instant or average and if the latter over what time? When my central heating turns on in the morning I want to see if it uses full 28 kW or if I have a fault in the plumbing which is causing it to reduce output, if sample rate is once a minute then I can see what it going on, if once an hour it is about as much use as a chocolate fire guard.
My father-in-law had one fitted, my brother-in-law says they never asked him, and he has power of attorney so they should have done, but since meter outside they it seems just got on with it, and left my father-in-law with no central heating as the pilot flame went out, not the way to treat a 91 year old, the remote control he was given is on a shelve in the garage and is clearly of no interest to him.
As to if my brother-in-law takes it home it will still work I don't think so, the real question is can we see what he is using so if he leaves the pan on the cooker we can see the hob is running? The boiler is not condensate so that should be a set wattage, so we should be able to see, but how?