SAW A FLYING SAUCER CLOSE UP, IN THE MIDDLE OF LONDON JUST BEFORE MORNING RUSH OUR ?

1980 ON THE WAY TO WORK - BEHIND SAINSBURIES SUPERMARKET, ONE LEVEL BUILDING ( STOCKWELL ) ABOVE TRASH SKIP MAYBE 15 to 20 FEET IN THE AIR, MAX - CLASSIC FLYING SAUCER SHAPE - LOOKED ALMOST FAKE - NOT LARGE, FAIRLY SMALL - NO MORE THAN 10' IN DIAMETER - SEEMED TO WOBBLE - NO NOISE - FLAT  METALIC FINISH - NO OTHER VISABLE FEATURES - OBSERVED IT FOR A LONG TIME AS IT GRADUALLY GAINED HEIGHT  UNTIL I COULD HARDLY SEE IT ANYMORE - WAS LATE FOR WORK AND HAD TO LEAVE - INTERESTING EXPERIENCE - NOT THAT DRAMATIC, KINDA DISAPOINTING ACTUALLY - THOUGHT FOR A LITTLE WHILE IT WAS A JOKE AND THAN I WAS POSSIBLY ON CANDID CAMERA HOWEVER THE OBJECT GAINED HIGHT UNTIL IT WAS A SMALL DOT - NO STRING ATTACHED OR TRICK OF THE LIGHT - WAS A CLOSE UP ENCOUTER, NOT A PASSING BLUR - COULD MAKE IT OUT PERFECTLY CLEARLY AND WATCHED IT FOR A LONG TIME,  MAYBE AS LONG AS 10 MINS.