London is the smallest city in the UK

Yes, you heard it right. Your view of London is really only a small part of the metropolitan area of Greater London. The City of London occupies only 1.2 square miles and has a population of about 7,500. So the City of London is actually the smallest city in England. Greater London, on the other hand, is an area of the United Kingdom with surrounding towns covering an area of 606 square miles and a population of over 8.7 million.