* Political system: Parliamentary democracy with a constitutional monarchy.
* Head of state: King George VI (until 1952), then Queen Elizabeth II.
* Head of government: Prime Minister Winston Churchill (until 1945), then Clement Attlee.
* Ruling party: Labour Party (1945-1951), then Conservative Party.
East Germany
* Political system: Socialist republic.
* Head of state: President Wilhelm Pieck.
* Head of government: Prime Minister Otto Grotewohl.
* Ruling party: Socialist Unity Party of Germany (SED).
Key differences
* The United Kingdom was a parliamentary democracy, while East Germany was a socialist republic.
* The head of state in the United Kingdom was the monarch, while in East Germany it was the president.
* The head of government in the United Kingdom was the prime minister, while in East Germany it was the prime minister.
* The ruling party in the United Kingdom was the Labour Party or the Conservative Party, while in East Germany it was the Socialist Unity Party of Germany (SED).