Some UK airports have regulations about their charghes thrust upon them (from http://www.caaerg.co.uk
Quinquennial Reviews of Designated Airports
Under the Airports Act 1986 the CAA has to reset price caps on airport charges generally every five years at airports designated by the Secretary of State. The airports currently designated are Heathrow, Gatwick, Stansted and Manchester. Before it can set a price cap the CAA must , consistently with the Airports Act, make a reference to the Competition Commission unless the Secretary of State directs otherwise. The reference asks the Commission to report on what the maximum limit on airport charges for the following period of five years should be, and whether, since the date of the previous reference, the airport has pursued a course of conduct contrary to the public interest.
Following a decision by the CAA in May 1999 to extend the current price caps at the BAA London airports into a sixth year (the maximum extension the Airports Act allows) the price caps at Heathrow, Gatwick, Stansted and Manchester will each expire on 31 March 2003. New price caps will have to be set for the period from 1 April 2003 to 31 March 2008. The CAA will therefore be reviewing the BAA London airports and Manchester in parallel.