The Nation of Brunei, the Abode of Peace and the United Kingdom of Great Britain and Northern Ireland have formal diplomatic relations.

The United Kingdom is also actively engaged in encouraging small businesses from Brunei to take their products into international markets.

[3] The United Kingdom has signed the accession protocol to join the Comprehensive and Progressive Agreement for Trans-Pacific Partnership,a trade bloc which Brunei is already a part of, which would further enhance and build upon the trading relationship amongst the United Kingdom and Brunei.

[4][5] There are very strong defence relations that date back before the independence of Brunei from the British Empire.

This defence cooperation includes equipment sales, training, military and intelligence exchanges and assistance and the sharing of experiences.