Those who ignore the new rules will be slapped with a £100 fine – and that will increase for repeat offenders.
The limit means members of the public will be allowed to meet with just five other friends in most parts of the UK – with the measures intended to help bring down the recent sharp rise in Covid-19 positive cases.
There will be slight differences in the approach towards the Rule of Six in England, Wales and Scotland – while Northern Ireland already introduced a limit of six last month
However, the limited number of people in one gathering will not be applied to schools, workplaces, universities, gyms or places of worship – but Covid-secure measures should be in place at all locations.
The law is changing in response to the ongoing coronavirus pandemic to make gatherings of more than six people illegal under most circumstances.
There are variations to the rules in each of the four nations of the UK – so here is a run down of what you can do, and what you can’t.
Groups of a maximum of six will not be permitted between friends or family anywhere – either indoors or outdoors.
From Monday 14 September social gatherings in excess of six people will be illegal.
Those who ignore the new law will face £100 fines, doubling on each repeat offence up to £3,200.
The limit also applies to all age groups – including babies and children.
This applies to both meeting inside and outside – and extends to arranging to meet in venues like pubs and restaurants.
The gathering limit of six does not extend to work, education, places of worship, or gym classes.
And if those are in a support bubble or household that is larger than six people, they will still be allowed to meet and/or live together.
The six people can be from any number of households – but those from different households should continue to socially distance from each other.
While a maximum of 30 will be able to attend “wedding and civil partnership ceremonies and receptions, or for other religious life-cycle ceremonies” – where social distancing must be enforced, face coverings are required, and dancing is banned.
Indoor gatherings are already illegal in Wales – unless those meet are from “extended households” which can be up to four households who have agreed to meet exclusively as a bubble.
The new rule of six will also apply to meeting friends and family in venues such as pubs and restaurants.
From Monday 14 September social gatherings are limited to a maximum of six people.