Foreign relations between the United Kingdom and its predecessors with Liechtenstein date back to World War I.

Diplomatic relations between the United Kingdom and Liechtenstein date back to World War I.

[2] Though Liechtenstein remained neutral throughout the conflict, it retained close ties to Austria-Hungary and was sympathetic to the Central Powers.

[3] At the outbreak of the war, the United Kingdom interned Liechtensteiners and partially confiscated their assets.

[8] Both countries were members of the European Economic Area until the United Kingdom's departure on 31 January 2020.