As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SMOKE BEGAN COMING FROM THE NR 1 AFT GALLEY OVEN WHILE EN ROUTE TO LGW. THE OVEN CIRCUIT BREAKER WAS PULLED AND THE SMOKE CEASED. THE FLIGHT CONTINUED TO LGW WHERE IT LANDED SAFELY WITHOUT FURTHER INCIDENT. THE OVEN AND CONTROLLER WERE REMOVED AND REPLACED AND OPERATIONAL CHECKS WERE GOOD.