On 28 March 2018, a Boeing 787-9 crew inadvertently commenced takeoff from the displaced threshold of the departure runway at Gatwick instead of the full length which was required for the rated thrust used. The Investigation found that the runway involved was a secondary one which the crew were unfamiliar with and to which access was gained by continuing along a taxiway which followed its extended centreline. It was noted that at least four other similar incidents had occurred during the previous six months and that various risk reduction actions had since been taken by the airport operator / ANSP.