This means that the police and local authorities will have the power to make sure people comply with the new regulations.
In stores, customers were already required to wear masks or other masks, but no, it will be mandatory for trade staff to do the same.
Social distancing and other covid-safe environments will also be required by stores if they are allowed to continue operating.
This includes limiting the number of people inside the stores.
The police, councils and even the army will be relied on to enforce the rules.
Establishing the new rules, Mr Johnson said: ‘We will expand the requirement to wear face masks to include staff in retail, all users of taxis and private hire vehicles and staff and customers of indoor hotels, except when they are seated at a table to eat or drink. ”
He added: “In retail, leisure and tourism and other sectors, our Covid-secure guidelines will become legal obligations. ”
Rules come into effect as pubs, cafes and restaurants are told they should only offer storytelling service – no bar queues – and will have to close by 10 p.m. hours.
Weddings have been limited to no more than 15 people, people are told to work from home, and masks will be mandatory for taxi drivers.
Fears have also been raised over the panic buying that hit supermarkets across the country earlier in the pandemic.
However, supermarkets have said they believe they are better prepared this time around.
The new rules were welcomed by a customer who said he left a hardware store he visited with his elderly mother because he did not feel safe.
He said: “We wore masks, but that only protects others. We needed the same protection – especially my mother who has a number of health issues.
“We left and I told the seller that we weren’t going to come back until the staff wore masks. “