Current lockdown started on the 4th of Jan, and the travel restrictions came in then. We also had lockdown part 2 back in November, for the whole of November, lockdown part 1 from April-June last year, and various degrees of lockdown in between with regional variations...
I've lived in Aus before, and I agree it's great for many reasons, am looking forward to being back.
On the electrical thing, I know there are some restrictions on what you can do in the UK - putting in new circuits, adding new lighting circuits etc. I've pushed the boundaries a bit here AFAICT by fixing a lighting circuit* and swapping a few single sockets for doubles. Other work like putting cat 6 in the walls I did myself without a thought. Looks like I need to take a look at the regs.
( * the light switch in our bedroom somehow flicked between "one bulb on" and "two bulbs in series", with no off setting )
(oh wow, you're right, I can't change a light fitting, or even legally change a plug from UK -> Aus without breaking the law. Will have to buy new cables where I can, maybe change one or two plugs before I leave!)
Arduino is fine.
> This is the same in many countries, including the UK right now.
Yes, true in UK during the past 1-2 months of national lockdown?
Aus's has been the case for 12 months.