Police say they are analysing hours of CCTV and images from the demonstrations as the “large and tightly-packed” crowds are said to make it difficult for officers to identify and arrest people immediately.
Commander Dominic Murphy, head of the Met’s Counter Terrorism Command, said: “Having pursued various lines of inquiry to try and identify these men, we are now seeking the public’s help.
“Many of the images we are sharing are very clear so I feel confident that there will be members of public who recognise the men.
“I really urge anyone who has information about these men – no matter how small – to call our confidential hotline.
“And if any of these men recognise themselves, I encourage them to go to a police station, so we can speak with them.”
Anyone who knows who these people are or has information that could help the investigation is asked to report it in confidence online atgov.uk/ACTor by calling 0800 789 321.