It was a large oval(ish) shape, very bright orange, coming very fast towards us. As it went by (quite a way in the distance) it was still very bright orange from the rear as it zoomed off into the distance very quickly!! Weird!!

Yes, I have just stated above that it zoomed off very fast.

As we sit in our kitchen in the4 evening having our dinner we can see planes or helicopters in the sky. Bopth my husband and I saw this object coming up the River Avon Valley and it was very orange. We both went outside to look and we could see it was neither a plane or a helicopter. We watched it move past us and the rear view was the same as the front ( very bright orange and almost oval in shape with a brighter circle around the middle, moving very fast). It did 'zoom' past us, which was the words that we used in the first question, then realized that was your second question! Very Weird!!