In its arrests update Sunday, the Met said there were 11 arrests for hate-crime related offences, with nine of those at the Unite the Kingdom event and two at the Nakba Day march.
“They included offences motivated by race, religion, sexuality and disability,” the force said, adding a further seven suspected hate crimes at the pro-Palestinian protest remain under investigation.
The other arrests at Robinson’s rally ranged from public order and drunk and disorderly offences to suspects being held for previous grievous bodily harm and telecommunications offences.
There were two arrests for assault on an emergency worker and one for possession of an offensive weapon.
At the Nakba Day demonstration, the arrests included three for failing to remove a face covering, one for assault on an emergency worker and one for supporting a proscribed organisation.
Robinson, a former football hooligan turned anti-Islam activist whose real name is Stephen Yaxley-Lennon, had urged his attendees not to wear masks or drink excessive alcohol, and to be “peaceful and courteous”.
From a stage in Parliament Square, which featured various far-right and other speakers, he claimed to be spearheading a “cultural revolution” and urged attendees to get politically active ahead of “the battle of Britain” in 2029, when the country’s next general election is due.