Double diamond, mottled brown in colour, 8 feet long.The UFO was 8 feet long and was travelling at around 30 miles an hour in a southerley direction over Gloucestershire, England. It was mottled brown in colour and was about 300 to 400 feet high. It travelled silently and eventually went higher and higher until it disappeard. Conditions were as follows. No wind, warm evening, no cloud cover. The shape was like two diamonds.((NUFORC Note: Witness does not specify exact location. PD))