Boris Johnson says England's measures will be reviewed once the priority groups have had the vaccine.
Fines of £800 will be handed to anyone attending a house party of more than 15 people from next week.
A special unit set up by the Crown Office is looking into Covid deaths involving 474 care homes across Scotland.
The plant says the move will affect one line making the Qashqai and Leaf, but will resume next week.
A report criticises the union after it told its members not to volunteer due to safety concerns.