Several craft flying over.

I saw several balls of light travelling overhead. I started to film. I captured one flying very fast just above the low clouds. I then recorded one dancing around before heading off at speed in the same direction as the others. When I zoomed in and played the video back in slow motion I noticed other objects moving upwards at speed and disappearing into the clouds. Two appear from the bottom of the screen and a third in the top left. All within the first 10 secs. One of them seems to momentarily change shape and looks to have 4 lights and pyramidal in shape.