British 747 Takeoff in wet weather (4k)

This beast will not be flying for long as it will stop service in 2020. A few fun facts from BA:
- The world’s 747 fleet has flown 3.5 billion people - the equivalent of half of the world's population.
- British Airways is the world's largest operator of the Boeing 747-400.
- A 747-400 typically takes off at 290km/h (180mph), cruises at 910km/h (565mph) and lands at 260km/h (160mph).

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What airport is this?