Police have appealed for help to identify an additional 18 people suspected of public order offences and assaults on emergency workers on the day of the Unite the Kingdom march.
Between 110,000 and 150,000 people attended the rally in central London on 13 September, the Metropolitan Police estimates.
Protesters heard a number of speeches, including from far-right activist Tommy Robinson, who organised the rally and called it the “biggest freedom of speech” event in British history.
An anti-racism counter-protest, attended by about 5,000 campaigners, also took place, with the two groups clashing on Whitehall and Trafalgar Square, separated by lines of police.
Police previously said 24 people were arrested at the protests, 23 of whom are believed to have been involved in the Unite the Kingdom rally, while one was believed to be involved in the counter-protest.
The force launched an appeal to identify 11 people last week, one of whom was identified.
Officers now want to speak to a further 18 people “in connection with a range of public order offences and assaults on emergency workers” and have released 16 new images.
The Met previously said 26 officers were assaulted with kicks and punches, adding: “Bottles, flares and other projectiles were also thrown and concerted attempts were made to get past barriers.”
“Our post-event investigation continues and officers have looked through hundreds of hours of CCTV footage to review evidence to help with further inquiries,” said Detective Chief Inspector Natalie Norris.
“We have 28 people we want to speak to in connection with a range of offences – and we are again appealing for the public’s help to track them down.”
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People may have travelled from outside London, so she said she was asking people “across the country” to look at a number of pictures that have been released and to get in touch if they recognise anyone.
