I also asked for just a gas smart meter, with my late mothers house, and was told can't have one without also doing electric meter.
As to why we would want an electric smart meter not sure, without a smart meter I get this

can't see a smart meter telling me any thing I don't already know!
It seems one does not need to export to same company as one imports from, so may be better with two independent meters? I have been trying to read the meter, this

is not helpful, and that is with just two displays, my phone takes a few seconds before it takes photo after pressing button, so have to judge when to press it.
I look at my power usage and must admit I wonder how I can save more money, likely a second battery, but how does one know until one can see the graph for ones own house? I am now exporting around a kW

which would be better used, we are near the equinox so reasonable average for year, but what can one really do with the information, I was told it would take 6 years to break even, I calculate more like 12 years at today's prices.
OK on oil now so does not matter so much, but when I gas I wanted to know how much gas was being used in the same way as my ammeter shows electric being used. I can easy read my meter

OK here measuring half the solar panels DC output, but with gas I had no idea if the boiler was just about to turn off as near minimum output, or if on maximum output. If the house is cold and on max, nothing I can really do, but if cold and on min, then I can look for poor setting, easy with oil, output always the same when running, so it is the mark/space ratio and one can hear what that is.
However I was told the gas meter only refreshes around every 20 minutes, so a bit useless anyway.
So to get an electrician to move consumer unit 20 mm to get meter in, sorry, I would simply not have a smart meter, why do I want to give some one the ability to turn off my power remotely? I want some one to knock on my door first, so I can say sorry that's not me, or if it was pay the bill.
If some one says if you let us install a smart meter we will sell you electric at a reduced rate at night for example, then yes OK, but other wise what is the point?