Your car should be registered, and comply with the regulations of the country in which you live.
If you live in the UK, then you will need to get an MOT and the vehicle re registered to comply with UK law. DVLA will advise. A british insurer would probably insure it for you for a temporary period whilst the re registration procedure is gone through.
Most of our car importing is from the UK to France, where you need a french address to get french insurance, and the vehicle in order to be legal has to be re registered within one month - although certain sections of the expat community run around in illegal UK registered vehicles, totally oblivious till they have an accident.
I suspect the same thing applies the other way round, its possible (assuming you have a french address) to register and insure a car in France and then to use to use that car temporarily in another EU state, ie for visits etc, but your insurers might only pay out on a third party basis if the car is in use permanently outside the country it is registered. We know of people who were only paid out a fraction (around 10%) of the value of a vehicle which was UK registered but the owners were resident here, when it was written off.
In short I'm afraid Edwards advice is extremely dubious.