The Prime Minister has confirmed that all five tests required for the next phase of lockdown easing to begin have been met, adding: "The result is we can moved forward with adjusting the lockdown on Monday".
He defended Mr Cummings' actions and said people could "exercise a degree of personal judgment" in following lockdown laws.
Around 40 Tory MPs have called for Mr Cummings to resign or be fired after his 260-mile journey came to light.
Mr Johnson also said that he was now "more optimistic" about the hospitality sector, adding that the "we may be able to do things faster" than the current plan for companies to reopen from July 4.
The Prime Minister said there has been a "toll taken on family and friends unable to see each other".
But on Wednesday morning, Communities Secretary Robert Jenrick said "there isn't going to be a formal review" and the issuing of fines was a matter for the police.
No further police action will be taken against Cummings, and police said they did not deem him to have committed an offense by driving some 260 miles from London to Durham to relocate his family while they were self-isolating.
Former Tory chancellor Sajid Javid said Mr Cummings's trip to County Durham was neither "necessary or justified" and he should apologise.
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However he seemed to get a little, well, too excited. "There was so much torque in that swing". After being teased by commentator Charles Barkley, Brady holes-out on the seventh hole Par 5.
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Airport officials said it happened because many states said they would not be able to accept flights after initially agreeing. The Indian state of Maharashtra , the epicentre of COVID-19 positive cases, is still undecided about allowing air travel.
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This is not the first time the president tweeted about Scarborough having a hand in the death of the intern 19 years ago. The president's tweet referred to the 2001 death of Lori Klausutis , a 28-year-old aide at Scarborough's office.
He said he was "deeply sorry for all the hurt and pain and anxiety that people have been going through throughout this period", but repeatedly insisted it was now time to "move on".
Tory MPs and scientists advising ministers have warned that Mr Cummings' actions risk undermining respect for the restrictions which have helped curb the spread of a virus which has been linked to at least 47,300 deaths in the UK.
"However, in the same circumstances, none of us would have made the decisions he made - particularly over the visit to Barnard Castle".
The Prime minister replied: 'Ii have already achieved simply that.
Asked whether the Cabinet Secretary Sir Mark Sedwill, the UK's top civil servant, should investigate Mr Cummings' actions, he said: "Quite frankly, I am not certain that right now an inquiry into that matter is a very good use of official time".
Dominic Cummings drove over 400km with his wife, who had Covid-19 symptoms, so family could care for their son.
On Tuesday, junior minister Douglas Ross resigned in protest at Mr Cummings' defence of his behaviour, saying that his interpretation of the government guidance was "not shared by the vast majority of people".