British police officers were attacked while attempting to disperse an illegal party overnight in west London, the second such incident in two days.
As England eases strict coronavirus lockdown rules, police have had to deal with a number of illegal parties and raves across the country.
"We know that having months of restrictions people have been frustrating and people will want to come together in gatherings but these illegal raves are obviously unacceptable," Environment Secretary George Eustice told Sky News.
"Attacks on the police that we saw earlier this week are also unacceptable," he said.
"Attacks on police are unacceptable."— SkyNews (@SkyNews) June 26, 2020
Environment Secretary George Eustice says he knows months of restrictions have left people "frustrated" but illegal raves are "obviously unacceptable".#Breakfast
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On Wednesday night, 22 officers were hurt and a number of patrol cars were vandalised when trouble broke out at an unauthorised music event in Brixton, south London.
Extra numbers were deployed onto the streets last night but officers came under attack once again in the Notting Hill area of west London, the scene of a number of unlicensed music events that took place in the capital.
"Objects were thrown at officers," police said on Twitter. "Such behaviour and any violent acts will not be tolerated."
Home Secretary Priti Patel had described the scenes on Wednesday night as "vile" while a spokesman for Prime Minister Boris Johnson called the violence against the police appalling.
Yesterday, authorities in Bournemouth, a popular beach town in southern England, declared a "major incident" over what they called the irresponsible behaviour of crowds who had ignored public health guidance on coronavirus and badly overstretched local services.
The declaration came after visitors arrived in very large numbers in a spell of hot weather, resulting in gridlock on the roads and some anti-social behaviour.