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By 2047 the population of London is expected to reach 9.97 million people, an increase of almost 699,500 when compared with 2025. While there has been quite a steep rise in its population in recent years, London’s population growth was relatively stagnant throughout the 1980s and even decreased slightly towards the end of that decade. After peaking at 8.89 million in 2019, the population of London has fallen slightly, to 8.8 million by 2021. 

UK population forecast

Like London, the population of the United Kingdom is forecast to continue to grow well into the middle of the century. By 2046, the population of the UK is estimated to be over 76.3 million people, an increase of over 20 million people when compared with the population figures for 1976. Additionally, the average age of the population is predicted to increase from 39.5 years in 2020 to 44.5 years by the mid-2040s, and continue to increase towards the end of the century. 

London looms large

In the UK, London is by far the largest urban agglomeration in the country, dwarfing the UK's next largest cities of Birmingham, Manchester, and Leeds. London also has a dominant economic position in the UK, with the city accounting for around a quarter of the total GDP in the country. The UK capital also has a far higher GDP per head than the rest of the county, at over * pounds in 2023, compared with the UK average of * ±è´Ç³Ü²Ô»å²õ.Ìý