On the 8th november 2017 at 06:44 i was letting my dogs into the garden as i had just got up for work. it was a very clear but cold & frosty morning, visibility of the sky was very good. i noticed a circular light travelling along the sky & thought it was a plane at first but in my opinon it seemed to going far quick for the distance to be a plane so i got my phone & started recording. it wasn't until later in the day when i was looking at the video that i noticed some strange movements to it, it took about 10 views to see all but on a number of occasions it seems to change direction slightly but sharply, this does not seem to be the movement of an standard aircraft. also at the very end of the video as i'm tracking the object it seems to suddenly dart in the opposite direction, when i shot the video i thought i had lost it so it was only when i reviewed it that i noticed this.