Health Secretary Matt Hancock has defended the government reopening pubs and restaurants on Saturday.
Thousands of people in England took advantage of their new freedoms yesterday, but trouble flared up in some parts of the country.
Police also expressed concern after pictures emerged of revellers packed in close together in city centres across the country.
Asked about the reopening, Mr Hancock told Sky News: “Largely, although there are some pictures to the contrary, people have acted responsibly.
“Overall I am pleased with what happened yesterday,” he added.
Mr Hancock said he had seen images of people behaving “to the contrary” and stressed that people should act responsibly.
Just hours earlier a senior police union official warned that drunk people are unable to properly socially distance.
Police Fed chair John Apter said it was “crystal clear” revellers would not adhere to the one metre plus rule as restrictions were eased on Saturday.
Professor Chris Whitty said the pandemic “is a long way from gone” and urged the public to follow social-distancing rules as pubs and restaurants reopened.
But images from London’s Soho showed packed streets into the early hours of Sunday.
Mr Apter, who was on shift in Southampton where he dealt with “naked men, happy drunks, angry drunks, fights and more angry drunks”, said: “What was crystal clear is that drunk people can’t/won’t socially distance.
“It was a busy night but the shift managed to cope. I know other areas have had issues with officers being assaulted.”
There was disorder in north Nottinghamshire too, where four people were arrested and several pubs decided to close after alcohol related anti-social behaviour.
A major easing of lockdown measures in England saw pubs, restaurants, hairdressers and cinemas opening their doors again under modified social distancing regulations.