Will I be punished for breaking the rules?
The Government hope the new rules will make it easier for the police to break up large gatherings.
Failure to stick to the new rules could mean a £100 fine, which will double with every subsequent offence up to £3,200.
Read more: Will there be a second lockdown?
What does the Prime Minister say?
The Prime Minister will officially announce the new rules at a press conference on Wednesday.
He is expected to then tell the public: “We need to act now to stop the virus spreading.
“So we are simplifying and strengthening the rules on social contact – making them easier to understand and for the police to enforce.
“It is absolutely critical that people now abide by these rules and remember the basics – washing your hands, covering your face, keeping space from others, and getting a test if you have symptoms.”
What are the rules in other parts of the UK?
In Scotland, up to eight people are allowed to meet indoors, while groups of 15 from up to five households are permitted outdoors, but people should maintain a social distance.
People there should not meet people from more than 4 other households in total whether indoors and/or outdoors – in any day.
In Wales, up to 30 people can meet outdoors and in Northern Ireland the number is 15.
Read more: The latest rules for areas under local lockdown across the UK