What was found
DURING CRUISE FLIGHT ATTENDANTS REPORTED SMOKE AT CEILING AREA ABOVE AFT GALLEY, PULLED CIRCUIT BREAKERS AND SMOKE APPEARED TO STOP. DIVERTED TO LGW AND LANDING WAS UNEVENTFUL. TESTED ALL HOT PLATES, COFFEE MAKERS, BUN WARMERS, CHILLERS, OVENS AND FOUND NR 2 OVEN TO OVER TEMP AND WAS REPLACED AND CHECKS OK.