Aviation in the United Kingdom refers to the activities surrounding mechanical flight in the United Kingdom, in both civilian and military contexts.

Civil aviation

Civil aviation is conducted under the supervision of the Civil Aviation Authority (CAA), a statutory corporation which oversees and regulates all aspects of civil aviation in the United Kingdom. Its areas of responsibility include:

Aviation in the United Kingdom

Supervising the issuing of pilots' licences, testing of equipment, calibrating of navaids, and many other inspections (Civil Aviation Flying Unit). Managing the regulation of security standards, including vetting of all personnel in the aviation industry (Directorate of Aviation Security). Overseeing the national protection scheme for customers abroad in the event of a travel company failure (Air Travel Organisers' Licensing – ATOL).

Aviation in the United Kingdom

The CAA is a public corporation of the Department for Transport, liaising with the government via the Standards Group of the Cabinet Office. Historically, the work of the CAA was previously carried out by the Ministry of Aviation, a department of the United Kingdom government established in 1959. Its responsibilities included the regulation of civil aviation and the supply of military aircraft, which it took on from the Ministry of Supply. In 1967, the Ministry of Aviation merged into the Ministry of Technology which took on the supply of military aircraft, while regulatory responsibilities were switched to the Board of Trade.

Aviation in the United Kingdom

Air transport in the United Kingdom is the commercial carriage of passengers, freight and mail by aircraft, both within the United Kingdom (UK) and between the UK and the rest of the world. In the past 25 years the industry has seen continuous growth, and the demand for passenger air travel in particular is forecast to increase from the current level of 236 million passengers to 465 million in 2030. One airport, London Heathrow Airport, is amongst the top ten busiest airports in the world. More than half of all passengers travelling by air in the UK currently travel via the six London area airports. Outside London, Manchester Airport is by far the largest and busiest of the remaining airports, acting as a hub for the 20 million or so people who live within a two-hour drive. Regional airports have experienced the most growth in recent years, due to the success of 'no-frills' airlines over the last decade. In 2013 the UK had the third highest number of passengers carried of any country, behind only the United States and China.

Outside of air transport, general aviation in the United Kingdom has been defined as a civil aircraft operation other than a commercial air transport flight operating to a schedule or military aviation. Although the International Civil Aviation Organization (ICAO) excludes any form of remunerated aviation from its definition, some commercial operations are often included within the scope of general aviation (GA) in the UK. The sector operates business jets, rotorcraft, piston and jet-engined fixed-wing aircraft, gliders of all descriptions, and lighter than air craft. Public transport operations include business (or corporate) aviation and air taxi services, and account for nearly half of the economic contribution made by the sector. Other commercial GA activities are aerial work, such as surveying and air ambulances, and flight training, which plays an important role in the supply of pilots to the commercial air transport (CAT) industry. Private flying is conducted for personal transport and recreation. It includes a strong vintage aircraft movement, and encompasses a range of air sports, such as racing, aerobatics, and parachuting, at which British teams and individuals have succeeded in international competition.

Organisations in the United Kingdom (UK) describe GA in less restrictive terms that include elements of commercial aviation. The British Business and General Aviation Association interprets it to be "all aeroplane and helicopter flying except that performed by the major airlines and the Armed Services". The General Aviation Awareness Council applies the description "all Civil Aviation operations other than scheduled air services and non-scheduled air transport operations for remuneration or hire". For the purposes of a strategic review of GA in the UK, the Civil Aviation Authority (CAA) defined the scope of GA as "a civil aircraft operation other than a commercial air transport flight operating to a schedule", and considered it necessary to depart from the ICAO definition and include aerial work and minor CAT operations.