Flights were diverted and put on hold as the airport switched to a stand in runway to support air traffic last night.
Unconfirmed sources suggest the inspection had revealed a ‘hole’ in the runway.
In a tweet, the airport said customer safety was a ‘number one priority’.
The main runway has now reopened and is operating as normal, the airport confirmed on Twitter.
Gatwick is one of the busiest single-runway airports in the world, with an estimated 40 million customers passing through last year.
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