On Monday Mr Johnson said the rules needed to be followed, or else England could see more restrictions.
He said: “Now is the moment for maximum vigilance, maximum observance of the rules.
“Of course, if we feel that things are not being properly observed then we may have to do more.”
If the Prime Minister wanted to install stricter rules, there are a couple of things he could do.
Nurseries, currently permitted to stay open, could face closure in a bid to drive down Covid cases.