Demonstrators hurled bottles as officers attempted to disperse the crowds in Hyde Park on Saturday ( April 24) evening.
Photographs posted on social media show a female police officer bleeding from a cut to her head, while another suffered a similar wound on his forehead.
Earlier that day, people also took to Oxford Street to protest against vaccine passports, face masks and lockdown.
Officers then approached a crowd of over 100 people who were playing music and gathered closely together in Hyde Park in breach of coronavirus restrictions.
As they did so, the officers came under “sustained and violent attack”, with 14 receiving injuries from missiles and physical assaults. Five required medical treatment.
Detective Chief Inspector Nat Norris, from the Met’s Public Order Command, said: “The level of violence directed at these officers is some of the worst I have seen in recent years.
“These officers were simply trying to do their job and it can never be acceptable for them to be attacked in this way.
“I would urge anyone who recognises those pictured to contact us so we can speak to them about this incident.”
Anyone with information should call the incident room number on 07776673655 or email P204035@met.police.uk quoting Operation Koban.
Alternatively, you can call Crimestoppers anonymously on 0800 555 111