Estimates for “how many people were at the London protest” depend on which recent London protest you mean, because there have been several large ones with very different crowd sizes.

Quick Scoop

If you’re asking about the high‑profile anti‑immigration protest in London in September 2025, police and major outlets reported around 110,000–150,000 people taking part. Some supporters on forums claimed “a million plus,” but that’s not backed by official or independent estimates.

More recently, there have also been smaller Kurdish‑focused demonstrations in central London, including one reported at about 600 people near Downing Street. Another London demonstration in support of Rojava and the Kurds on 25 January 2026 was described simply as “thousands of people,” without a precise public figure.

Because your question doesn’t specify date or cause, the safest answer is:

  • Big far‑right/anti‑immigration march (Sept 2025): roughly 110,000–150,000 people, according to police and mainstream reports.
  • Kurdish demonstration outside Downing Street (Jan 2026): about 600 people.
  • “Break the Silence, Defend Rojava” London demo (25 Jan 2026): reported as “thousands” of participants.

To give you a precise figure, I’d need which London protest (date or issue) you’re asking about.

Information gathered from public forums or data available on the internet and portrayed here.