Spherical UFO filmed over London, UK

100% real Aye also saw this when aye was in my garden in fife Scotland, Ad say it was traveling about 40 mph est and roughly about 150-200 feet high and about just a little bigger than a basketball it was heading south in a straight line not weaving or bobbing no sound was heard and didnt spin, Looked metalic silver in colour and the sky was clear no clouds bright sunny day around late afternoon.