British Airways, the flag carrier airline of the United Kingdom, has its headquarters located near Heathrow Airport in London, England. The exact address for BA headquarters is Waterside, PO Box 365, Harmondsworth, UB7 0GB, United Kingdom. This modern office complex serves as the central hub for the airline's administrative and operational functions, including management, customer service, marketing, and more. The proximity to Heathrow Airport allows for efficient coordination of British Airways' flight operations and services.