British Civil Aviation in 1921

January
Airship R34 is seriously damaged when it collides with a hill in fog. It limps back to its base at Howden, where it is completely destroyed by a combination of poor ground handling and adverse weather.

January
The first automatic pilot system, known as the Aveline Stabilizer, is installed in a British aircraft by Handley Page Transport.

March
The British government provides subsidies to Handley Page Transport and Instone Air Line to ensure continued operations on the London to Paris route.

1 June
Air to ground traffic control is established, when air patrols report information to the police and the Automobile Association on Derby Day.

17 September
The first Air League Challenge Cup Race is held.