Airport operator BAA last week formally challenged the Competition Commission’s ruling that it must sell at least three of its airports.
The challenge began at a three day Competition Appeal Tribunal hearing which started on Monday.
The Competition Commission ruled in March this year that BAA should sell Gatwick and Stansted as well as either Edinburgh or Glasgow within two years. The commission had ruled that the airports sector in the UK was uncompetitive.
BAA claims that the commission is affected by apparent bias and that the report failed to take into account the adverse financial impact of introducing competition. A final ruling is expected around Christmas.
In the meantime BAA last week agreed to sell Gatwick last week to London City airport owner Global Infrastructure Partners for £1.51bn.