The CAA is the UK's independent aviation regulator, with all civil aviation regulatory functions (economic regulation, airspace policy, safety regulation and consumer protection) integrated within a single specialist body.

The Directorate of Airspace Policy is responsible for the planning and regulation of all UK airspace including the navigation and communications infrastructure to support safe and efficient operations.

The Consumer Protection Group regulates the finances and fitness of travel organisers, manages the Air Travel Organisers' Licensing (ATOL), licenses UK airlines and enforces European Council requirements, including Denied Boarding, Cancellation and Delay.

The Economic Regulation Group regulates airports, air traffic services and airlines and provides advice on aviation policy from an economic standpoint.

The Safety Regulation Group sets certain national safety standards.  In parallel, it oversees the activities of the aviation community and its level of compliance with both national and European safety standards.

ATOL is the government's licensing and financial protection scheme for air holidays and flights sold by tour operators and travel organisers in the UK.