Watermelon-shaped UFO seen over London

Summary

An observer in London reported a watermelon-shaped object of white light moving slowly. It was estimated to be around 300 feet high and disappeared behind buildings. The sighting occurred at 3 a.m. and lasted three minutes.

The report is brief and lacks information about the observer's reliability or air traffic in the area. Although it mentions that it could be the landing light of an incoming plane, no concrete evaluation can be made. The report concludes that there is insufficient information to determine the nature of the object.