The car doesn't have to be on the road nor even mot'd or taxed to be insured and maintain the no claims, whether that is cost effective or not I've no idea.
My cheapest insurances are under £200 fully comp (£130 and £170 iirc) but do not carry no claims bonus.
In a time of universal deceit - telling the truth is a revolutionary act. George Orwell
When the debate is lost, slander becomes the tool of the loser. Socrates