Time: 29th July 2020 at approx 10:30pm.
Location: London, UK
Apologise for the low quality video, this is 1 of 4 clips I shot with my mobile at the time.
This object was sighted outside my bedroom window flying above a school building.
It would have two 'modes'; one is when the object would appear as an intense bright white light flashing in pulses and moving erratically in the air, and it would also stop flashing and I could make out a 'ball' with a faint green glow around it and it would fly around. It didn't behave like a conventional aircraft, it would hover, fly back and forth and also immediately stop when flying, hover for a bit and then start moving again.
My first thought was this is a drone, but I've never seen anything like this since.
by DemonSlayer01