New laws being introduced into Parliament on Monday make it specifically illegal to have someone from a different household in your home in England.
Until now anyone visiting a home that isn’t their own would have been breaking the law – now it is illegal for both the visitor and the host.
The rules apply even if you are in a relationship with the other person or they are family.
The rules come into force as lockdown is eased in England to allow up to six people to meet in a garden – but those new rules make it clear you can only go into a house to use the toilet or to walk through to a garden.
The new legislation explicitly bans being inside the house in a gathering of more than one person without a reasonable excuse, reports The Mirror.
People who may be deemed to have a reasonable excuse are sports professionals, people attending funerals, vulnerable persons fleeing a risk of violence, carers and those with unavoidable work commitments.
You are allowed to stay at another location over night to attend a funeral of a close family member and athletes can stay outside their homes for training.
You can also go to another address if you are moving house or to get medical help.
The police last week made it clear they do not have the power to enter a garden to check how many people are there and if they are following the rules.