Emirates Boeing 777-31HER A6-EPN operated an additional Dubai – London Gatwick rotation this as afternoon as EK2545/EK2546. However EK2546 stopped the climb at 4,000ft due to a technical issue, entered holds at 4,000ft and 7,000ft to burn fuel then returned to London Gatwick. After two hours on the ground the aircraft departed again and successfully completed the flight.