In the 2003 film Love Actually, what is the name of the Prime Minister's residence?

The Prime Minister's residence in the 2003 film Love Actually is 10 Downing Street.

Hugh Grant plays the newly elected British Prime Minister, whose official home and workplace are represented as 10 Downing Street. His storyline follows his growing affection for Natalie, a member of the household staff, while the film interweaves several other romantic and family stories.

10 Downing Street is the real official residence and office of the Prime Minister of the United Kingdom. The address is in London, near Whitehall, and has served that role since the eighteenth century.

The film was written and directed by Richard Curtis. Its ensemble cast includes Emma Thompson, Alan Rickman, Keira Knightley, Colin Firth, Liam Neeson, and Bill Nighy. The residence is sometimes confused with Buckingham Palace, which is the monarch's official London residence.