There is another UFO in the channel at around 4500m about 10km south of Dover. Two of us ran intercepts on it last night. On first sighting it appears as a standard contact....i.e. the initial dot. As you close it grows a vertical white line that extends downwards from the dot. At about 5km away the dot disappears (a la ghost style) but the line remains. As you get inside about 1km a single thick vertical line can be seen with 2 thinner lines as well ... Weird or what ?
This is the first time I have seen this on line.