Heathrow Terminal 5 opened in what year?

Heathrow Terminal 5 is an airport terminal at Heathrow Airport, the main airport serving London. Opened in 2008, the main building in the complex is the largest free-standing structure in the United Kingdom. Terminal 5 is currently used exclusively as one of the three global hubs of International Airlines Group, served by British Airways and Iberia, with the others being London Gatwick South and Madrid Barajas Terminal 4. Prior to 2012, the terminal was used solely by British Airways.

The terminal was designed to handle 35 million passengers a year. In 2015, Terminal 5 handled 33.1 million passengers on 215,716 flights; 44.6% of the airport's passengers on 46.6% of its flights with an average of 153 passengers per flight. It was the busiest terminal at the airport, measured both by passenger numbers and flight movements.

The building's leading architects were from the Richard Rogers Partnership and production design was completed by aviation architects Pascall+Watson. The engineers for the structure were Arup and Mott MacDonald. The building cost £4 billion and took almost 20 years from conception to completion, including the longest public inquiry in British history.