The airport is owned by Heathrow Airport Holdings Limited. Heathrow Airport Holdings Limited owns four other UK airports. ADI Limited owns Heathrow Airport Holdings Limited. The airlines which use the airport the most are British Airways and Loganair (as Flybe). Loganair uses Glasgow as a hub. Other big airlines using Glasgow as a base include BMI Regional, Flybe, EasyJet, Jet2, Thomas Cook Airlines and Thomson Airways.