The witness was outside at 9:35 p.m. on February 13, 2018.
“Black triangle over Boxford, West Berkshire (UK) travelling west to east approximately 30-40 mph, parallel to M4,” the witness stated. “Weather cold (3 degrees C), with clear skies, constellations clearly visible, moon just a tiny sliver, maybe 8 percent lit, very dark night. Altitude - Approximately 2-3000 ft (1km) Silent. Size - approximately 35-50 meters tip to tail (medium sized airliner length.) The two leading edges looked longer than the rear edge (60-40 percent.) The rear edge appeared to be a light strip looking a bit like a classic sci-fi light drive. A bit like football stadium lights but not as bright, a yellow/white color. Flashing red and white lights at the tips. (White may have been constant, red was flashing.) No lights underneath. Body appeared to be satin/matte black. Observed from approximately 30-degree angle at distance of approximately one mile, south of my position. (Triangle flying approximately two miles south of M4.) Observed for approximately three minutes before being obscured by houses and trees. Dog was disturbed and jumped around three or four times and made a squeaky disturbed dog noise. She's never done this before when I've taken her out.”
United Kingdom Field Investigator Karl Webb closed this case as an Unknown Aerial Vehicle.