Aliens Filmed in London?

The pictures are said to be still frame captures from video cassette, and they are certainly good enough for everyone to at least have a look at them. According to the anonymous sender, this is what happened.

Mr. Unknown was awakened sometime in the middle of the night by the louder than usual sounds of his neighbor's dog.

Being shaken from slumber, he had a very strange feeling, either from something odd going on outside, or the remnant of a bad dream. To rule out the former, he took a walk outside to see if he could pinpoint the cause of the dog's heightened state of alarm.

He was immediately drawn to a strange light in the sky. The light seemed to emanate from three spots, the brightest being in front of two others behind it, creating a triangular shape. He was staring at a triangle-shaped UFO.