10 Downing Street in London is the official residence and office of the prime minister of the United Kingdom. Colloquially known as Number 10, the building is in Downing Street, off Whitehall in the City of Westminster. 10 Downing Street is the current residence of the current prime minister Keir Starmer, since 2024 after succeeding former prime minister Rishi Sunak. It is over 300 years old, is Grade I listed, and contains approximately 100 rooms. A private residence for the prime minister occupies the third floor and there is a kitchen in the basement.
https://en.wikipedia.org/wiki/10_Downing_Street