No, only one person, who must carry the reason for breaking lockdown, I stopped and you say you are going shopping then when you have finished shopping keep the receipt, this because some people still think like back in thexUK, you can just go where you want and say what you want, for everyone's sakes stay indoors.
If travelling back to the u k bay car, you must state your destination and that the reason is because of the request of the British Government to return back to your home country and you will stay there, travell for a holiday is not allowed, obviously more than 1 person in the car if returning back to the UK, but, a heavy fine if you return or prison. Safe rules for everyone.