The estimated population of London in 2025 is approximately 9,840,740 people. This figure represents the usual resident population including Greater London and adjacent suburban areas. On a specific day like today, the population present in London may vary due to daily commuting and events, but the general population size is close to 9.8 million.
Regarding events today, there was a large protest in London with an estimated attendance of about 110,000 people, according to the Metropolitan Police. This is a specific gathering and does not significantly change the overall population estimate for London on the day.
