Simplify the following text for a Grade 10 native English-speaking person.
Original: Heathrow is owned and operated by BAA Limited , which also owns\/operates six other UK airports and is itself owned by an international consortium led by the Spanish Ferrovial Group .
Simplified: The airport is owned and operated by BAA , who also own and operate five other UK airports . BAA is owned by ADI Limited , an international consortium led by the Spanish Ferrovial Group , which also includes Caisse de dÃ pÃ t et placement du QuÃ bec and GIC Special Investments .