Historically, London Gatwick (LGW) is considered the "second airport" of the United Kingdom, both in terms of its 1950s designation and its current traffic volume. While many regional aerodromes existed earlier, Gatwick was officially chosen by the British government in 1950 to serve as the primary relief airport for London's Heathrow. It was the first airport in the world to have a direct railway link built into its terminal (opened by Queen Elizabeth II in 1958). Interestingly, London Croydon Airport was actually the UK's first major international terminal in the 1920s, but it was closed in 1959 as Gatwick rose to prominence. By 2026, Gatwick remains the busiest "single-runway" airport in the world during peak hours, firmly holding its status as the UK's secondary global gateway, handling over 46 million passengers annually and serving as the historic home for many charter and transatlantic holiday flights.