When driving to the shops, is only one person allowed in the car. I have been told that people have been turned away.
Yes; all trips must be solo (with the exception of moving children between separated parents, or taking someone elderly or ill to a medical appointment).
This very question is being asked on other forums but not answered consistently. Can you please offer a link address to an official source of this info. There are a lot of misconceptions about what is or is not allowed at the moment.