"As our incredible city continues to grow, Londoners should rest assured that we are working tirelessly to provide the homes, water, energy, schools, transport, digital connectivity and better quality of life they expect," Johnson was quoted as saying by The Daily Mail.
The mayor pointed that the British capital has more green space than any other European city, making it no surprise that more people were moving to London. The mayor also said London is "the best big city on the planet."
According to the Greater London Authority, the population of London is estimated to stand at about 8.615 million, beating the previous peak of 8.6 million, measured 76 years ago on the eve of the World War II.
The major said that London's westernmost borough of Hillingdon experienced the greatest increase, with its population rising from 159,000 in 1939 to almost 300,000 in 2015, with over 40 percent of this group from black or of other ethnic minority origins.
Johnson said that the population increase should be embraced as a positive aspect of the city development and called on the government to grant London greater control of its finances to fund infrastructure and create employment.
"It is crucial that we recognise the amazing opportunities that this kind of growth can offer and step up our investment now so that London continues to be the motor of the UK economy," Johnson said.
Meanwhile, London's population is expected to hit 11 million by 2050, authorities estimate. By 2031, over half the Londoners are predicted to be born outside the United Kingdom.
