This summer myself and about 10 others saw five or six white objects floating about near a cloud in a mostly blue sky. They were moving about in an odd fashion, then occasionally there would be a bright flash, and some were just disappearing and then reappearing.After a minute or two they all just disappeared from view. I tried to film them on my phone but even fully zoomed in nothing could be made out as they were about 20,000 feet up and probably only a few metres across at most. Some of the other witnesses thought they were balloons, but they weren't.
Geese mate.