One man was arrested for suspected animal cruelty after a police horse was targeted.

Three individuals were held for assaulting an emergency worker, and one was suspected of assault.

Another person was arrested for being drunk and disorderly.

A video shared by the Met showed officers forming a cordon as a group pushed past it, leading to the closure of Whitehall to traffic.

After the situation was resolved, a large police presence remained opposite Downing Street where a group had gathered.

The event had not yet started, and the Met expressed regret over the early disorder.

A group of people, some wearing masks, ignored a police cordon and continued to an event in Richmond Terrace, where far-right activist Tommy Robinson was speaking.

When officers asked them to turn back, the group became violent and pushed through the cordon.

Mounted officers intervened to restore order.

Earlier, a Section 60AA order was in effect in Lambeth and Westminster, allowing officers to request the removal of face coverings.

Attendees were seen waving St George's Cross flags during the speeches.