SIGHTING REPORT UFO sighting at Bristol, U.K

2 objects relatively the same size. One of the objects was metallic as it reflected sunlight, however there was a second object zigzagging around the first. This object did not reflect any sunlight, but it was omitting what looked like some kind of orange light. In fact initially I thought it was a hot balloon as it looked like the kind of flames produced when ascending. However, it was not flying in a conventional fashion and this aroused my suspicions. I called my wife out and she confirmed that she could also see both objects. I would say that both objects were about 15-20,000 feet high.

As previously stated the objects were not flying in a conventional manner, in fact it looked like the shiny object was floating and this is why I thought it could be a hot air balloon initially. When my wife came out they started drifting quite slowly at first and then I took my eye off it for about 2-3 seconds. when I looked back up it wasn't in the same spot, but my wife had followed the objects and they appeared to travel about 8-10 miles in this time. I continued to track the objects for another 10 seconds or so then they disappeared, very quickly.