ERG regulates the charges paid by airlines at airports designated by the Government (currently Heathrow, Gatwick and Stansted) and deals with complaints about the conduct of airports. In addition it has functions under the European directive on ground handling at airports.

A description of the CAA's powers under The Airports Act 1986 and documents relating to its economic regulation (including its price review of the designated airports) can be found in the section on The Airports Act 1986.

Documents relating to price reviews are available in the section on Quinquennial Reviews of Designated Airports.

Documents relating to the CAA's powers with respect to groundhandling are available in the section on Airports (Groundhandling) Regulations 1997.