Country Profile: British Indian Ocean Territory

The British Indian Ocean Territory (BIOT) is a small archipelago located in the Indian Ocean, primarily consisting of the Chagos Archipelago. The territory is primarily known for Diego Garcia, its only inhabited island, which hosts a significant UK-US military base. Although there are no permanent inhabitants, the territory has a complex history involving the displacement of the indigenous Chagossians and ongoing international negotiations regarding sovereignty. The economy is largely focused on military activities and limited extraction of natural resources, with no significant agricultural production.

Geography

The British Indian Ocean Territory is an archipelago situated south of India, approximately halfway between Africa and Indonesia. It consists of 55 islands, with Diego Garcia as the largest and only inhabited island. The territory is characterized by its flat coral atolls and a tropical marine climate, moderated by trade winds.

60 sq km total area of BIOT
698 km of coastline
200 nm Environmental Protection Zone
Highest point on Diego Garcia: 9 m above sea level
Lacks natural hazards, situated outside cyclone routes

People and Society

The British Indian Ocean Territory does not have a permanent population, with only temporary residents associated with the military presence on Diego Garcia. This territory's demographic profile has been significantly affected by the historical relocation of the Chagossian people.

0 permanent inhabitants in BIOT
Diego Garcia hosts a joint military facility for the UK and US

Economy

The economy of the British Indian Ocean Territory is predominantly driven by the military installations on Diego Garcia, with limited commercial activities. Recent agreements have opened up opportunities for oil exports, while the marine reserve restricts commercial fishing in the surrounding waters.

86% of exports go to Singapore (2023)
Main export: fish (2023)
52% of imports come from Greece (2023)
Key imports include refined petroleum and animal products

Government

The British Indian Ocean Territory is classified as an overseas territory of the UK, administered by a commissioner from the Foreign, Commonwealth, and Development Office in London. The legal system is based on UK law, and the territory has been governed under the British Indian Ocean Territory Constitution Order since 2004.

The head of state is King CHARLES III (since 2022)
The current Commissioner is Nishi DHOLAKIA (since 2024)
The territory's flag features the UK's flag and symbols related to the islands

Military and Security

The UK is responsible for the defense of the British Indian Ocean Territory, as there are no regular military forces stationed there. Diego Garcia serves as a strategic military base under a long-term lease agreement with Mauritius, which will come into effect in 2025.

The UK will maintain operational control over Diego Garcia for 99 years after the sovereignty transfer
No regular military forces are present

Transportation

Transportation within the British Indian Ocean Territory primarily relies on its single airfield and its port facilities. The key port is located on Diego Garcia, which supports the movement of military personnel and supplies.

1 operational airport (2025)
1 port with oil terminal on Diego Garcia

Communications

Communications in the British Indian Ocean Territory are largely military-focused, with Armed Forces Radio and Television Service providing broadcasts to the personnel stationed on the islands. Moreover, Diego Garcia hosts vital ground antennas that contribute to GPS functionality.

Internet country code: .io
Broadcast media primarily for military personnel

Key Metrics

Metric	Value	Note
Population	0	No permanent inhabitants
Area	60 sq km	Total area of BIOT
Coastline	698 km	Coastline measurement
Exports to Singapore	86%	Share of exports in 2023
Main export commodity	Fish	Primary export in 2023
Imports from Greece	52%	Share of imports in 2023
Operational airport	1	Airports in the territory (2025)