After government scientists cautioned that deaths may soar without urgent action, Johnson stopped short of another full lockdown as he did in March, but said further action could be taken if the disease was not suppressed.
Prime Minister Boris Johnson will announce the new measures, which will kick in from this Thursday (24 September), to parliament this afternoon at 12.30pm.
He will also address the nation from Downing Street later about the new restrictions and the UK's fight against the virus.
The UK's chief medical officers recommended on Monday that the Covid-19 alert level should be moved from 3 to 4, which means the transmission of the virus is "high or rising exponentially".
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From tomorrow, face coverings must be worn in taxis.
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Mr Johnson announced a package of new restrictions, including a requirement for pubs, restaurants and other venues in England to close between 10:00pm and 5:00am each day.
COVID-secure guidelines will become a legal obligation for businesses in the retail, leisure and tourism sectors.
The PM had a meeting with The Cabinet this morning and is also chairing a Cobra emergency committee meeting with the leaders of Wales, Scotland and Northern Ireland.
People who can not, such as those working in construction or retail, are being advised they should continue to go to their workplaces.
He told the Commons: "Now is the time to tighten up the rule of six".
From Monday, a maximum of 15 people will be allowed to attend wedding ceremonies and receptions, but the limit remains at 30 for funerals.
In a response to questioning of the Government's decision to introduce the 10pm curfew that will no doubt anger the hospitality sector, Johnson said: "These are not easy decisions".
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Hospitalizations are on the rise with Salina Regional Health Center reporting that they have 9 hospitalized COVID-19 patients. There are now 765 people hospitalized with COVID-19 in the county, 30 percent of whom are in the ICU.
Masks will be required in more settings, there will be tougher enforcement of rules, and the military could be brought in to help free up the police, Johnson said.
She said she hoped it would be less than six months.
No more than six people from two households can meet in private gardens, with children under 12 not counted in the total.
What will the new measures mean for people working from home? .
Also, Matt Hancock, the Health Secretary said the United Kingdom is considering a short-term national lockdown in an attempt to curb the number of infections before the pandemic becomes uncontrollable.
However, Michael Gove, the Chancellor of the Duchy of Lancaster, on Tuesday said that the government was now encouraging people to work from home where possible.
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"We have to acknowledge that the spread of the virus is now affecting our ability to reopen business conferences, exhibitions and large sporting events". "If we fail to act together now, we not only put others at risk but jeopardise our own futures with the more drastic action that we will inevitably be forced to take".