London Population 2025. With a population of approximately nine million people, london is by far the largest city in the united kingdom, with the uk's second and third largest cities, having a combined population of. Over the next 39 years (to 2050) it is expected to rise steeply to over 11.3m people.
London’s population is on course to increase from its current nine million people to close to 11 million in 2050 or even more, according to new projections compiled by the greater london. United nations population projections are also included through the year 2035.