As of Monday, September 14, groups of more than six people will be banned – both indoors and outdoors.
Previously, guidance in England allowed gatherings of up to six people from different households outdoors, or two households of any size, indoors or outdoors, to meet.
But from Monday police will have the power to enforce fines on those who won’t comply with the rules.
Those who break the rules face a £100 fine, which doubles on each offence up to a maximum of £3,200.
But what does this mean for weddings that were due to take place on or after Monday?
How many people can attend a wedding?
The good news is that weddings that are Covid-secure can still go ahead.
Weddings of up to 30 people can go ahead, as long as the attendants practice social distancing.
The Government guidelines state: “No more than 30 people should attend a marriage or civil partnership, where this can be safely accommodated with social distancing in a Covid-19 secure venue."
It continues: “This is the maximum number for all attendees at the event, including the couple and guests.
“It also includes any third-party suppliers, such as photographers or security, but does not include staff employed by the venue or any third party catering staff.”
Weddings are an exception to the new rule, along with funerals and organised sporting events.
Should there be any more than 30 people there they risk getting fined.
Luckily, couples getting married don’t need to wear a face mask, and can share a traditional first kiss.
Meanwhile, any other guests "should wear face coverings consistent with the requirements for any other public space".
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Those who don’t live in the same household should be socially distant, and can only take place in a Covid-secure venue.
That means they can’t take place in someone’s private home or garden.
The Government has advised that food should, wherever possible, be served by staff.
A full list of exceptions to the new rule is expected to be published by the government ahead of Monday.
Prime Minister Boris Johnson will hold a press conferenc e today, explaining the new rules further.