Flashing sphere spotted in the sky

I was walking the dog and was looking at the storm clouds that were forming wondering if it was going to rain when I spotted the object that you can see in the video. I watched it for about ten seconds before taking my phone out of my coat pocket to film the attached video. It seemed like it was rolling over in the sky changing from white to black as it moved across the sky. It was only visible for maximum 2 minutes before disappearing. My video was longer, well I thought I had filmed for longer however it seems that the video cut out! I filmed it for a while but when I reviewed the footage it’s a short video. When reviewing the video I also noticed another object right at the start of the video that changes directions really quickly at a right angle, it moves towards the spinning object in the video. You will be able to see the other object if you slow down the footage right at the start. I could not see the second object with my naked eye it was only once I reviewed the video that I saw it.
I’m really not sure what it is if I’m honest. I’ve seen drones and heard drones and it’s nothing like that, and it made no noise at all total silence and to be honest it felt silent on that bit of the walk. All a bit eerie.