the former name of the company that used to own and run Britain's major airports. From 2009 for legal reasons BAA had to sell off most of the airports it previously owned and kept only Heathrow Airport as that made up most of its business. As a result, in 2012 BAA changed its name to Heathrow Airport Holdings.曾经拥有并经营英国主要机场的公司的前身。从2009年起,出于法律原因,BAA必须出售其先前拥有的大多数机场,并仅保留希思罗机场,这是其大部分业务的基础。结果,BAA在2012年更名为希思罗机场控股公司。