The restrictions come almost four weeks after restrictions were eased across England, allowing people to meet indoors for the first time since late March.
An outbreak of coronavirus has been identified in parts of Northern England, which resulted in the government imposing tighter lockdown restrictions in the area on Thursday night.
His announcement came hours after the government increased regional lockdown measures - under which people from different households are banned from meeting indoors - for some four million people across Greater Manchester and parts of Lancashire and Yorkshire.
But what are these new rules and how will they be enforced? Areas affected by the latest lockdown have significant Muslim populations.
Greater Manchester, including the City of Manchester, Trafford, Stockport, Oldham, Bury, Wigan, Bolton, Tameside, Rochdale and Salford.
Leaders also want workplace data to be included in the NHS Track and Trace system, saying that this would enable the identification of potential workplace hotspots.
What are the new restrictions?
However, people will still be able to visit pubs, restaurants and other businesses, providing they do so not to meet other people from other households. Exemptions apply to those who have formed a support bubble or for other "limited exemptions".
People in areas like Greater Manchester, West Yorkshire and East Lancashire will no longer be allowed to visit their friends inside their houses.
How will the government enforce these rules? Those breaking the rules will face a fine of 100 pounds.
Labour Party business spokeswoman Lucy Powell said the "bolt out of the blue" approach was "not the way to build confidence and to take people with you and maximize compliance with these steps".
Health Secretary Matt Hancock said restrictions were being tightened slightly for millions of Britons because people were "meeting and not abiding to social distancing".
The measures were introduced hastily during the start of the annual Eid al-Adha "feast of sacrifice", disrupting the celebration that marks the end of Ramadan for hundreds of thousands of British Muslims.
Up to two households, or six people from any number of households may meet outdoors, excluding private gardens, where there's a lower risk of infection.
'This is a place which prides itself on looking out for each other.
85 new Covid-19 cases confirmed
It is important that people know that there is no charge for GP or testing services relating to COVID-19. Up to date , national figures show there was one new death from Covid-19 in Ireland.
Muslims sacrifice sheep on first day of Eid
Post the sacrifice , devotees distribute the offering to family, friends, neighbours and especially to the poor and the needy. Several worshipers also assembled outside a mosque in the national capital's Usmapur area of Northeast Delhi as well.